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1
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0343811119
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From: PhD dissertation, Boston University, Boston, MA
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From: Lee, L. PhD dissertation, Boston University, Boston, MA, 1999.
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(1999)
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Lee, L.1
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2
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45449097286
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Reviews and overviews: (a)
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Reviews and overviews: (a) Boger, D. L. Tetrahedron 1983, 39, 2869-2939. (b) Boger, D. L. Chem. Rev. 1986, 86, 781-793. (c) Boger, D. L.; Weinreb, S. M. Hetero Diels-Alder Methodology in Organic Synthesis; Organic Chemistry Monograph Series; Vol. 47; Academic: New York, 1987; (especially Chapter 10). (d) Kametani, T.; Hibino, S. In Advances in Heterocyclic Chemistry; Katritzky, A. R., Ed.; Academic: New York, 1987; Vol. 42, pp 245-333. (e) Boger, D. L.; Patel, M. Prog. Heterocycl. Chem. 1989, 1, 30-64. (f) Boger, D. L. Bull. Soc. Chim. Belg. 1990, 99, 599-615. (g) Boger, D. L. Chemtracts: Org. Chem. 1996, 9, 149-189. (h) Boger, D. L. J. Heterocycl. Chem. 1996, 33, 1519-1531.
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Reviews and overviews: (a) Boger, D. L. Tetrahedron 1983, 39, 2869-2939. (b) Boger, D. L. Chem. Rev. 1986, 86, 781-793. (c) Boger, D. L.; Weinreb, S. M. Hetero Diels-Alder Methodology in Organic Synthesis; Organic Chemistry Monograph Series; Vol. 47; Academic: New York, 1987; (especially Chapter 10). (d) Kametani, T.; Hibino, S. In Advances in Heterocyclic Chemistry; Katritzky, A. R., Ed.; Academic: New York, 1987; Vol. 42, pp 245-333. (e) Boger, D. L.; Patel, M. Prog. Heterocycl. Chem. 1989, 1, 30-64. (f) Boger, D. L. Bull. Soc. Chim. Belg. 1990, 99, 599-615. (g) Boger, D. L. Chemtracts: Org. Chem. 1996, 9, 149-189. (h) Boger, D. L. J. Heterocycl. Chem. 1996, 33, 1519-1531.
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Reviews and overviews: (a) Boger, D. L. Tetrahedron 1983, 39, 2869-2939. (b) Boger, D. L. Chem. Rev. 1986, 86, 781-793. (c) Boger, D. L.; Weinreb, S. M. Hetero Diels-Alder Methodology in Organic Synthesis; Organic Chemistry Monograph Series; Vol. 47; Academic: New York, 1987; (especially Chapter 10). (d) Kametani, T.; Hibino, S. In Advances in Heterocyclic Chemistry; Katritzky, A. R., Ed.; Academic: New York, 1987; Vol. 42, pp 245-333. (e) Boger, D. L.; Patel, M. Prog. Heterocycl. Chem. 1989, 1, 30-64. (f) Boger, D. L. Bull. Soc. Chim. Belg. 1990, 99, 599-615. (g) Boger, D. L. Chemtracts: Org. Chem. 1996, 9, 149-189. (h) Boger, D. L. J. Heterocycl. Chem. 1996, 33, 1519-1531.
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Boger, D.L.1
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Reviews and overviews: (a) Boger, D. L. Tetrahedron 1983, 39, 2869-2939. (b) Boger, D. L. Chem. Rev. 1986, 86, 781-793. (c) Boger, D. L.; Weinreb, S. M. Hetero Diels-Alder Methodology in Organic Synthesis; Organic Chemistry Monograph Series; Vol. 47; Academic: New York, 1987; (especially Chapter 10). (d) Kametani, T.; Hibino, S. In Advances in Heterocyclic Chemistry; Katritzky, A. R., Ed.; Academic: New York, 1987; Vol. 42, pp 245-333. (e) Boger, D. L.; Patel, M. Prog. Heterocycl. Chem. 1989, 1, 30-64. (f) Boger, D. L. Bull. Soc. Chim. Belg. 1990, 99, 599-615. (g) Boger, D. L. Chemtracts: Org. Chem. 1996, 9, 149-189. (h) Boger, D. L. J. Heterocycl. Chem. 1996, 33, 1519-1531.
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NAr reactions of pyridazines: (d) Aldous, D. L.; Castle, R. N. In Pyridazines; Weissberger, A., Taylor, E. C., Eds.; The Chemistry of Heterocyclic Compounds Monograph Series; Vol. 28, Chapter 3; John Wiley & Sons: New York, 1973; pp 248-274. (e) Tisler, M.; Stanovnik, B. In Comprehensive Heterocyclic Chemistry; Boulton, A. J., McKillop, A., Eds.; Pergamon: New York, 1984; Vol. 3, Part 2B; pp 23-29.
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NAr reactions of pyridazines: (d) Aldous, D. L.; Castle, R. N. In Pyridazines; Weissberger, A., Taylor, E. C., Eds.; The Chemistry of Heterocyclic Compounds Monograph Series; Vol. 28, Chapter 3; John Wiley & Sons: New York, 1973; pp 248-274. (e) Tisler, M.; Stanovnik, B. In Comprehensive Heterocyclic Chemistry; Boulton, A. J., McKillop, A., Eds.; Pergamon: New York, 1984; Vol. 3, Part 2B; pp 23-29.
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NAr reactions of pyridazines: (d) Aldous, D. L.; Castle, R. N. In Pyridazines; Weissberger, A., Taylor, E. C., Eds.; The Chemistry of Heterocyclic Compounds Monograph Series; Vol. 28, Chapter 3; John Wiley & Sons: New York, 1973; pp 248-274. (e) Tisler, M.; Stanovnik, B. In Comprehensive Heterocyclic Chemistry; Boulton, A. J., McKillop, A., Eds.; Pergamon: New York, 1984; Vol. 3, Part 2B; pp 23-29.
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NAr reactions of pyridazines: (d) Aldous, D. L.; Castle, R. N. In Pyridazines; Weissberger, A., Taylor, E. C., Eds.; The Chemistry of Heterocyclic Compounds Monograph Series; Vol. 28, Chapter 3; John Wiley & Sons: New York, 1973; pp 248-274. (e) Tisler, M.; Stanovnik, B. In Comprehensive Heterocyclic Chemistry; Boulton, A. J., McKillop, A., Eds.; Pergamon: New York, 1984; Vol. 3, Part 2B; pp 23-29.
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(e) Boulton, A. J., McKillop, A., Eds.; Pergamon: New York
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NAr reactions of pyridazines: (d) Aldous, D. L.; Castle, R. N. In Pyridazines; Weissberger, A., Taylor, E. C., Eds.; The Chemistry of Heterocyclic Compounds Monograph Series; Vol. 28, Chapter 3; John Wiley & Sons: New York, 1973; pp 248-274. (e) Tisler, M.; Stanovnik, B. In Comprehensive Heterocyclic Chemistry; Boulton, A. J., McKillop, A., Eds.; Pergamon: New York, 1984; Vol. 3, Part 2B; pp 23-29.
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Preparation of 2a, see Supplementary Material from:
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NAr displacements of methylthiolate from 1,2,4,5-tetrazines: (a)
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NAr displacements of methylthiolate from 1,2,4,5-tetrazines: (a) Mangia, A.; Bortesi, F.; Amendola, U. J. Heterocycl. Chem. 1977, 14, 587-593. (b) Seitz, G.; Görge, L.; Dietrich, S. Tetrahedron Lett. 1985, 26, 4355-4358. (c) Panek, J. S.; Zhu, B. Tetrahedron Lett. 1996, 37, 8151-8154. (d) Sakya, S. M.; Groskopf, K. K.; Boger, D. L. Tetrahedron Lett. 1997, 38, 3805-3808. (e) Boger, D. L.; Schaum, R. P.; Garbaccio, R. M. J. Org. Chem. 1998, 63, 6329-6337.
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(b)
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NAr displacements of methylthiolate from 1,2,4,5-tetrazines: (a) Mangia, A.; Bortesi, F.; Amendola, U. J. Heterocycl. Chem. 1977, 14, 587-593. (b) Seitz, G.; Görge, L.; Dietrich, S. Tetrahedron Lett. 1985, 26, 4355-4358. (c) Panek, J. S.; Zhu, B. Tetrahedron Lett. 1996, 37, 8151-8154. (d) Sakya, S. M.; Groskopf, K. K.; Boger, D. L. Tetrahedron Lett. 1997, 38, 3805-3808. (e) Boger, D. L.; Schaum, R. P.; Garbaccio, R. M. J. Org. Chem. 1998, 63, 6329-6337.
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NAr displacements of methylthiolate from 1,2,4,5-tetrazines: (a) Mangia, A.; Bortesi, F.; Amendola, U. J. Heterocycl. Chem. 1977, 14, 587-593. (b) Seitz, G.; Görge, L.; Dietrich, S. Tetrahedron Lett. 1985, 26, 4355-4358. (c) Panek, J. S.; Zhu, B. Tetrahedron Lett. 1996, 37, 8151-8154. (d) Sakya, S. M.; Groskopf, K. K.; Boger, D. L. Tetrahedron Lett. 1997, 38, 3805-3808. (e) Boger, D. L.; Schaum, R. P.; Garbaccio, R. M. J. Org. Chem. 1998, 63, 6329-6337.
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NAr displacements of methylthiolate from 1,2,4,5-tetrazines: (a) Mangia, A.; Bortesi, F.; Amendola, U. J. Heterocycl. Chem. 1977, 14, 587-593. (b) Seitz, G.; Görge, L.; Dietrich, S. Tetrahedron Lett. 1985, 26, 4355-4358. (c) Panek, J. S.; Zhu, B. Tetrahedron Lett. 1996, 37, 8151-8154. (d) Sakya, S. M.; Groskopf, K. K.; Boger, D. L. Tetrahedron Lett. 1997, 38, 3805-3808. (e) Boger, D. L.; Schaum, R. P.; Garbaccio, R. M. J. Org. Chem. 1998, 63, 6329-6337.
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(e)
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NAr displacements of methylthiolate from 1,2,4,5-tetrazines: (a) Mangia, A.; Bortesi, F.; Amendola, U. J. Heterocycl. Chem. 1977, 14, 587-593. (b) Seitz, G.; Görge, L.; Dietrich, S. Tetrahedron Lett. 1985, 26, 4355-4358. (c) Panek, J. S.; Zhu, B. Tetrahedron Lett. 1996, 37, 8151-8154. (d) Sakya, S. M.; Groskopf, K. K.; Boger, D. L. Tetrahedron Lett. 1997, 38, 3805-3808. (e) Boger, D. L.; Schaum, R. P.; Garbaccio, R. M. J. Org. Chem. 1998, 63, 6329-6337.
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37
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NAr displacements of methylthiolate from 1,2,4-triazines: (a)
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NAr displacements of methylthiolate from 1,2,4-triazines: (a) Paudler, W. W.; Chen, T.-K. J. Heterocycl. Chem. 1970, 7, 767-771. (b) Seitz, G.; Görge, L.; Dietrich, S. Tetrahedron Lett. 1985, 26, 4355-4358. (c) Seitz, G.; Dietrich, S.; Görge, L.; Richter, J. Tetrahedron Lett. 1986, 27, 2747-2750. (d) Taylor, E. C.; Warner, J. C.; Pont, J. L. J. Org. Chem. 1988, 53, 800-803.
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NAr displacements of methylthiolate from 1,2,4-triazines: (a) Paudler, W. W.; Chen, T.-K. J. Heterocycl. Chem. 1970, 7, 767-771. (b) Seitz, G.; Görge, L.; Dietrich, S. Tetrahedron Lett. 1985, 26, 4355-4358. (c) Seitz, G.; Dietrich, S.; Görge, L.; Richter, J. Tetrahedron Lett. 1986, 27, 2747-2750. (d) Taylor, E. C.; Warner, J. C.; Pont, J. L. J. Org. Chem. 1988, 53, 800-803.
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(c) Seitz, G.; Dietrich, S.; Görge, L.; Richter
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NAr displacements of methylthiolate from 1,2,4-triazines: (a) Paudler, W. W.; Chen, T.-K. J. Heterocycl. Chem. 1970, 7, 767-771. (b) Seitz, G.; Görge, L.; Dietrich, S. Tetrahedron Lett. 1985, 26, 4355-4358. (c) Seitz, G.; Dietrich, S.; Görge, L.; Richter, J. Tetrahedron Lett. 1986, 27, 2747-2750. (d) Taylor, E. C.; Warner, J. C.; Pont, J. L. J. Org. Chem. 1988, 53, 800-803.
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NAr displacements of methylthiolate from 1,2,4-triazines: (a) Paudler, W. W.; Chen, T.-K. J. Heterocycl. Chem. 1970, 7, 767-771. (b) Seitz, G.; Görge, L.; Dietrich, S. Tetrahedron Lett. 1985, 26, 4355-4358. (c) Seitz, G.; Dietrich, S.; Görge, L.; Richter, J. Tetrahedron Lett. 1986, 27, 2747-2750. (d) Taylor, E. C.; Warner, J. C.; Pont, J. L. J. Org. Chem. 1988, 53, 800-803.
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Taylor, E.C.1
Warner, J.C.2
Pont, J.L.3
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41
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0001206433
-
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Preparation of 3a:
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Preparation of 3a: Benson, S. C.; Gross, J. L.; Snyder, J. K. J. Org. Chem. 1990, 55, 3257-3269.
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J. Org. Chem.
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Benson, S.C.1
Gross, J.L.2
Snyder, J.K.3
-
42
-
-
85007978564
-
-
NAr displacements using 3,6-dichloropyridazines to tether dienophiles for intramolecular Diels-Alder reactions: (a)
-
NAr displacements using 3,6-dichloropyridazines to tether dienophiles for intramolecular Diels-Alder reactions: (a) Jojima, T.; Takeshiba, H.; Konotsune, T. Chem. Pharm. Bull. 1972, 20, 2191-2203. (b) Jojima, T.; Takeshiba, H.; Kinoto, T. Chem. Pharm. Bull. 1976, 24, 1581-1587. (c) Jojima, T.; Takeshiba, H.; Kinoto, T. Chem. Pharm. Bull. 1976, 24, 1588-1595. (d) Jojima, T.; Takeshiba, H.; Kinoto, T. Chem. Pharm. Bull. 1980, 28, 198-201.
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(1972)
Chem. Pharm. Bull.
, vol.20
, pp. 2191-2203
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Jojima, T.1
Takeshiba, H.2
Konotsune, T.3
-
43
-
-
0343811112
-
-
(b)
-
NAr displacements using 3,6-dichloropyridazines to tether dienophiles for intramolecular Diels-Alder reactions: (a) Jojima, T.; Takeshiba, H.; Konotsune, T. Chem. Pharm. Bull. 1972, 20, 2191-2203. (b) Jojima, T.; Takeshiba, H.; Kinoto, T. Chem. Pharm. Bull. 1976, 24, 1581-1587. (c) Jojima, T.; Takeshiba, H.; Kinoto, T. Chem. Pharm. Bull. 1976, 24, 1588-1595. (d) Jojima, T.; Takeshiba, H.; Kinoto, T. Chem. Pharm. Bull. 1980, 28, 198-201.
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(1976)
Chem. Pharm. Bull.
, vol.24
, pp. 1581-1587
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Jojima, T.1
Takeshiba, H.2
Kinoto, T.3
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44
-
-
4344640872
-
-
(c) Jojima, T.; Takeshiba, H.; Kinoto, T.
-
NAr displacements using 3,6-dichloropyridazines to tether dienophiles for intramolecular Diels-Alder reactions: (a) Jojima, T.; Takeshiba, H.; Konotsune, T. Chem. Pharm. Bull. 1972, 20, 2191-2203. (b) Jojima, T.; Takeshiba, H.; Kinoto, T. Chem. Pharm. Bull. 1976, 24, 1581-1587. (c) Jojima, T.; Takeshiba, H.; Kinoto, T. Chem. Pharm. Bull. 1976, 24, 1588-1595. (d) Jojima, T.; Takeshiba, H.; Kinoto, T. Chem. Pharm. Bull. 1980, 28, 198-201.
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(1976)
Chem. Pharm. Bull.
, vol.24
, pp. 1588-1595
-
-
-
45
-
-
85008035444
-
-
(d)
-
NAr displacements using 3,6-dichloropyridazines to tether dienophiles for intramolecular Diels-Alder reactions: (a) Jojima, T.; Takeshiba, H.; Konotsune, T. Chem. Pharm. Bull. 1972, 20, 2191-2203. (b) Jojima, T.; Takeshiba, H.; Kinoto, T. Chem. Pharm. Bull. 1976, 24, 1581-1587. (c) Jojima, T.; Takeshiba, H.; Kinoto, T. Chem. Pharm. Bull. 1976, 24, 1588-1595. (d) Jojima, T.; Takeshiba, H.; Kinoto, T. Chem. Pharm. Bull. 1980, 28, 198-201.
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(1980)
Chem. Pharm. Bull.
, vol.28
, pp. 198-201
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Jojima, T.1
Takeshiba, H.2
Kinoto, T.3
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46
-
-
0342505915
-
-
For similar tethering of carbamates to 2a, see Ref. [9e].
-
For similar tethering of carbamates to 2a, see Ref. [9e].
-
-
-
-
47
-
-
0343375525
-
-
1,2,4,5-Tetrazines are unstable to acidic and basic conditions, Ref. [6a] pp 1093-1094, and Ref. [6b], pp 543.
-
1,2,4,5-Tetrazines are unstable to acidic and basic conditions, Ref. [6a] pp 1093-1094, and Ref. [6b], pp 543.
-
-
-
-
49
-
-
0001101712
-
-
Acylation of the indole nitrogen still allowed for the intermolecular cycloaddition with dimethyl 1,2,4,5-tetrazine-3,6-dicarboxylate:
-
Acylation of the indole nitrogen still allowed for the intermolecular cycloaddition with dimethyl 1,2,4,5-tetrazine-3,6-dicarboxylate: Benson, S. C.; Palabrica, C. A.; Snyder, J. K. J. Org. Chem. 1987, 52, 4610-4614.
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J. Org. Chem.
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Benson, S.C.1
Palabrica, C.A.2
Snyder, J.K.3
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50
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0343811108
-
-
(a) Katritzky, A. R., Ed.; Academic New York
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(a) Smith, G. F. In Advances in Heterocyclic Chemistry; Katritzky, A. R., Ed.; Academic New York, 1953; Vol. 2, p 287.
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(1953)
In Advances in Heterocyclic Chemistry
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Smith, G.F.1
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51
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0342505914
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In Indoles, Part I
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(b) Houlihan, W. J., Ed.; Wiley & Sons: New York
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(b) Remers, W. A. In Indoles, Part I; Houlihan, W. J., Ed.; Chemistry of Heterocyclic Compounds Monograph Series; Wiley & Sons: New York; 1972, pp 66-67.
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Remers, W.A.1
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55
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0026757894
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(b) PhD dissertation, Boston University Also, see Ref. [3]
-
3 catalysis: (b) Li, J.-H. PhD dissertation, Boston University, 1994. Also, see Ref. [3].
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(1994)
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Li, J.-H.1
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58
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49049129491
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(c)
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(c) Bednarski, M.; Maring, C.; Danishefsky, S. Tetrahedron Lett. 1983, 24, 3451-3454.
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(1983)
Tetrahedron Lett.
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Bednarski, M.1
Maring, C.2
Danishefsky, S.3
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59
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0022419779
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(d) Danishefsky, S.; Uang, B. J.; Quallich, G. J. Am. Chem. Soc. 1985, 107, 1285-1293.
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Danishefsky, S.1
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(g) Danishefsky, S.; Aubé, J.; Bednarski, M. J. Am. Chem. Soc. 1986, 108, 4145-4149.
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J. Am. Chem. Soc.
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Danishefsky, S.1
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Bednarski, M.3
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64
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0023620060
-
-
Retro Diels-Alder reactions to release methyl cyanoformate have been reported: (a)
-
Retro Diels-Alder reactions to release methyl cyanoformate have been reported: (a) Taylor, E. C.; Pont, J. L. J. Org. Chem. 1987, 52, 4287-4292. (b) Boger, D. L.; Dang, Q. J. Org. Chem. 1992, 57, 1631-1633. (c) Boger, D. L.; Menezes, R. F.; Dang, Q. J. Org. Chem. 1992, 57, 4333-4336. (d) Boger, D. L.; Kochanny, M. J. J. Org. Chem. 1994, 59, 4950-4955. (e) Dang, Q.; Brown, B. S.; Erion, M. D. J. Org. Chem. 1996, 61, 5204-5205. (f) Dang, Q.; Liu, Y.; Erion, M. D. J. Am. Chem. Soc. 1999, 121, 5833-5834.
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Taylor, E.C.1
Pont, J.L.2
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65
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0026519656
-
-
(b)
-
Retro Diels-Alder reactions to release methyl cyanoformate have been reported: (a) Taylor, E. C.; Pont, J. L. J. Org. Chem. 1987, 52, 4287-4292. (b) Boger, D. L.; Dang, Q. J. Org. Chem. 1992, 57, 1631-1633. (c) Boger, D. L.; Menezes, R. F.; Dang, Q. J. Org. Chem. 1992, 57, 4333-4336. (d) Boger, D. L.; Kochanny, M. J. J. Org. Chem. 1994, 59, 4950-4955. (e) Dang, Q.; Brown, B. S.; Erion, M. D. J. Org. Chem. 1996, 61, 5204-5205. (f) Dang, Q.; Liu, Y.; Erion, M. D. J. Am. Chem. Soc. 1999, 121, 5833-5834.
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Boger, D.L.1
Dang, Q.2
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66
-
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0026731117
-
-
(c)
-
Retro Diels-Alder reactions to release methyl cyanoformate have been reported: (a) Taylor, E. C.; Pont, J. L. J. Org. Chem. 1987, 52, 4287-4292. (b) Boger, D. L.; Dang, Q. J. Org. Chem. 1992, 57, 1631-1633. (c) Boger, D. L.; Menezes, R. F.; Dang, Q. J. Org. Chem. 1992, 57, 4333-4336. (d) Boger, D. L.; Kochanny, M. J. J. Org. Chem. 1994, 59, 4950-4955. (e) Dang, Q.; Brown, B. S.; Erion, M. D. J. Org. Chem. 1996, 61, 5204-5205. (f) Dang, Q.; Liu, Y.; Erion, M. D. J. Am. Chem. Soc. 1999, 121, 5833-5834.
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J. Org. Chem.
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Boger, D.L.1
Menezes, R.F.2
Dang, Q.3
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67
-
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0001198391
-
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(d)
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Retro Diels-Alder reactions to release methyl cyanoformate have been reported: (a) Taylor, E. C.; Pont, J. L. J. Org. Chem. 1987, 52, 4287-4292. (b) Boger, D. L.; Dang, Q. J. Org. Chem. 1992, 57, 1631-1633. (c) Boger, D. L.; Menezes, R. F.; Dang, Q. J. Org. Chem. 1992, 57, 4333-4336. (d) Boger, D. L.; Kochanny, M. J. J. Org. Chem. 1994, 59, 4950-4955. (e) Dang, Q.; Brown, B. S.; Erion, M. D. J. Org. Chem. 1996, 61, 5204-5205. (f) Dang, Q.; Liu, Y.; Erion, M. D. J. Am. Chem. Soc. 1999, 121, 5833-5834.
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Boger, D.L.1
Kochanny, M.J.2
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68
-
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0029744577
-
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(e)
-
Retro Diels-Alder reactions to release methyl cyanoformate have been reported: (a) Taylor, E. C.; Pont, J. L. J. Org. Chem. 1987, 52, 4287-4292. (b) Boger, D. L.; Dang, Q. J. Org. Chem. 1992, 57, 1631-1633. (c) Boger, D. L.; Menezes, R. F.; Dang, Q. J. Org. Chem. 1992, 57, 4333-4336. (d) Boger, D. L.; Kochanny, M. J. J. Org. Chem. 1994, 59, 4950-4955. (e) Dang, Q.; Brown, B. S.; Erion, M. D. J. Org. Chem. 1996, 61, 5204-5205. (f) Dang, Q.; Liu, Y.; Erion, M. D. J. Am. Chem. Soc. 1999, 121, 5833-5834.
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Dang, Q.1
Brown, B.S.2
Erion, M.D.3
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69
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0033597618
-
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(f) Dang, Q.; Liu, Y.; Erion, M.D.
-
Retro Diels-Alder reactions to release methyl cyanoformate have been reported: (a) Taylor, E. C.; Pont, J. L. J. Org. Chem. 1987, 52, 4287-4292. (b) Boger, D. L.; Dang, Q. J. Org. Chem. 1992, 57, 1631-1633. (c) Boger, D. L.; Menezes, R. F.; Dang, Q. J. Org. Chem. 1992, 57, 4333-4336. (d) Boger, D. L.; Kochanny, M. J. J. Org. Chem. 1994, 59, 4950-4955. (e) Dang, Q.; Brown, B. S.; Erion, M. D. J. Org. Chem. 1996, 61, 5204-5205. (f) Dang, Q.; Liu, Y.; Erion, M. D. J. Am. Chem. Soc. 1999, 121, 5833-5834.
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(1999)
J. Am. Chem. Soc.
, vol.121
, pp. 5833-5834
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-
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71
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0342940178
-
-
13C spectra were recorded at 20 and 50°C, duplicate resonances were observed for most carbons due to slowly interconverting rotamers about the carbamate.
-
13C spectra were recorded at 20 and 50°C, duplicate resonances were observed for most carbons due to slowly interconverting rotamers about the carbamate.
-
-
-
-
72
-
-
0343811106
-
-
2 (96%) as described in the preparation of 1d, followed by BOC-protection (98%) as described in the preparation of 1b.
-
2 (96%) as described in the preparation of 1d, followed by BOC-protection (98%) as described in the preparation of 1b.
-
-
-
-
73
-
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0343375518
-
-
Resonances were severely broadened in the spectra recorded at ambient temperature due to inconverting rotamers
-
Resonances were severely broadened in the spectra recorded at ambient temperature due to inconverting rotamers.
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-
-
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