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See: (a) Banwell, M. G.; Berak, M.; Hockless, D. C. R. J. Chem. Soc., Perkin Trans. 1 1996, 2217-2219. (b) Banwell, M. G.; Gable, R. W.; Peters, S. C.; Phyland, J. R. J. Chem. Soc., Chem. Commun. 1995, 1395-1397. (c) Banwell, M. G.; Cowden, C. J.; Gable, R. W. J. Chem. Soc., Perkin Trans. 1 1994, 3515-3518. (d) Banwell, M. G.; Cowden, C. J. Aust. J. Chem. 1994, 47, 2235-2254. (e) Banwell, M. G.; Lambert, J. N.; Gulbis, J. M.; Mackay, M. F. J. Chem. Soc., Chem. Commun. 1990, 1450-1452. (f) Banwell, M. G.; Onrust, R. Tetrahedron Lett. 1985, 26, 4543-4546.
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Banwell, M.G.1
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See: (a) Banwell, M. G.; Berak, M.; Hockless, D. C. R. J. Chem. Soc., Perkin Trans. 1 1996, 2217-2219. (b) Banwell, M. G.; Gable, R. W.; Peters, S. C.; Phyland, J. R. J. Chem. Soc., Chem. Commun. 1995, 1395-1397. (c) Banwell, M. G.; Cowden, C. J.; Gable, R. W. J. Chem. Soc., Perkin Trans. 1 1994, 3515-3518. (d) Banwell, M. G.; Cowden, C. J. Aust. J. Chem. 1994, 47, 2235-2254. (e) Banwell, M. G.; Lambert, J. N.; Gulbis, J. M.; Mackay, M. F. J. Chem. Soc., Chem. Commun. 1990, 1450-1452. (f) Banwell, M. G.; Onrust, R. Tetrahedron Lett. 1985, 26, 4543-4546.
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Banwell, M.G.1
Gable, R.W.2
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0004992299
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See: (a) Banwell, M. G.; Berak, M.; Hockless, D. C. R. J. Chem. Soc., Perkin Trans. 1 1996, 2217-2219. (b) Banwell, M. G.; Gable, R. W.; Peters, S. C.; Phyland, J. R. J. Chem. Soc., Chem. Commun. 1995, 1395-1397. (c) Banwell, M. G.; Cowden, C. J.; Gable, R. W. J. Chem. Soc., Perkin Trans. 1 1994, 3515-3518. (d) Banwell, M. G.; Cowden, C. J. Aust. J. Chem. 1994, 47, 2235-2254. (e) Banwell, M. G.; Lambert, J. N.; Gulbis, J. M.; Mackay, M. F. J. Chem. Soc., Chem. Commun. 1990, 1450-1452. (f) Banwell, M. G.; Onrust, R. Tetrahedron Lett. 1985, 26, 4543-4546.
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Banwell, M.G.1
Cowden, C.J.2
Gable, R.W.3
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23
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0000983917
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See: (a) Banwell, M. G.; Berak, M.; Hockless, D. C. R. J. Chem. Soc., Perkin Trans. 1 1996, 2217-2219. (b) Banwell, M. G.; Gable, R. W.; Peters, S. C.; Phyland, J. R. J. Chem. Soc., Chem. Commun. 1995, 1395-1397. (c) Banwell, M. G.; Cowden, C. J.; Gable, R. W. J. Chem. Soc., Perkin Trans. 1 1994, 3515-3518. (d) Banwell, M. G.; Cowden, C. J. Aust. J. Chem. 1994, 47, 2235-2254. (e) Banwell, M. G.; Lambert, J. N.; Gulbis, J. M.; Mackay, M. F. J. Chem. Soc., Chem. Commun. 1990, 1450-1452. (f) Banwell, M. G.; Onrust, R. Tetrahedron Lett. 1985, 26, 4543-4546.
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Cowden, C.J.2
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24
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0025130201
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See: (a) Banwell, M. G.; Berak, M.; Hockless, D. C. R. J. Chem. Soc., Perkin Trans. 1 1996, 2217-2219. (b) Banwell, M. G.; Gable, R. W.; Peters, S. C.; Phyland, J. R. J. Chem. Soc., Chem. Commun. 1995, 1395-1397. (c) Banwell, M. G.; Cowden, C. J.; Gable, R. W. J. Chem. Soc., Perkin Trans. 1 1994, 3515-3518. (d) Banwell, M. G.; Cowden, C. J. Aust. J. Chem. 1994, 47, 2235-2254. (e) Banwell, M. G.; Lambert, J. N.; Gulbis, J. M.; Mackay, M. F. J. Chem. Soc., Chem. Commun. 1990, 1450-1452. (f) Banwell, M. G.; Onrust, R. Tetrahedron Lett. 1985, 26, 4543-4546.
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Banwell, M.G.1
Lambert, J.N.2
Gulbis, J.M.3
Mackay, M.F.4
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25
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0343631668
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See: (a) Banwell, M. G.; Berak, M.; Hockless, D. C. R. J. Chem. Soc., Perkin Trans. 1 1996, 2217-2219. (b) Banwell, M. G.; Gable, R. W.; Peters, S. C.; Phyland, J. R. J. Chem. Soc., Chem. Commun. 1995, 1395-1397. (c) Banwell, M. G.; Cowden, C. J.; Gable, R. W. J. Chem. Soc., Perkin Trans. 1 1994, 3515-3518. (d) Banwell, M. G.; Cowden, C. J. Aust. J. Chem. 1994, 47, 2235-2254. (e) Banwell, M. G.; Lambert, J. N.; Gulbis, J. M.; Mackay, M. F. J. Chem. Soc., Chem. Commun. 1990, 1450-1452. (f) Banwell, M. G.; Onrust, R. Tetrahedron Lett. 1985, 26, 4543-4546.
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Tetrahedron Lett.
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Banwell, M.G.1
Onrust, R.2
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26
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0030058852
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For some earlier examples of cationic cyclizations initiated by electrocyclic cleavage of gem-dibromocyclopropanes see: (a) Gassman, P. G.; Tan, L.; Hoye, T. R. Tetrahedron Lett. 1996, 37, 439-442. (b) Hemmingsen, T. H.; Svendsen, J. S.; Sydnes, L. K. Acta Chem. Scand. 1988, B42, 651-661. (c) Brocksom, T. J.; Canevarolo, E. T.; Lopes, F. T. An. Acad. Bras. Cienc. 1985, 57, 165-168; Chem. Abs. 1986, 105, 191422. (d) Danheiser, R. L.; Morin, J. M.; Salaski, E. J. J. Am. Chem. Soc. 1985, 107, 8066-8073. (e) Danheiser, R. L.; Morin, J. M.; Yu, M.; Basak, A. Tetrahedron Lett. 1981, 22, 4205-4208.
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Gassman, P.G.1
Tan, L.2
Hoye, T.R.3
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27
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0343288701
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For some earlier examples of cationic cyclizations initiated by electrocyclic cleavage of gem-dibromocyclopropanes see: (a) Gassman, P. G.; Tan, L.; Hoye, T. R. Tetrahedron Lett. 1996, 37, 439-442. (b) Hemmingsen, T. H.; Svendsen, J. S.; Sydnes, L. K. Acta Chem. Scand. 1988, B42, 651-661. (c) Brocksom, T. J.; Canevarolo, E. T.; Lopes, F. T. An. Acad. Bras. Cienc. 1985, 57, 165-168; Chem. Abs. 1986, 105, 191422. (d) Danheiser, R. L.; Morin, J. M.; Salaski, E. J. J. Am. Chem. Soc. 1985, 107, 8066-8073. (e) Danheiser, R. L.; Morin, J. M.; Yu, M.; Basak, A. Tetrahedron Lett. 1981, 22, 4205-4208.
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Svendsen, J.S.2
Sydnes, L.K.3
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0343804597
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For some earlier examples of cationic cyclizations initiated by electrocyclic cleavage of gem-dibromocyclopropanes see: (a) Gassman, P. G.; Tan, L.; Hoye, T. R. Tetrahedron Lett. 1996, 37, 439-442. (b) Hemmingsen, T. H.; Svendsen, J. S.; Sydnes, L. K. Acta Chem. Scand. 1988, B42, 651-661. (c) Brocksom, T. J.; Canevarolo, E. T.; Lopes, F. T. An. Acad. Bras. Cienc. 1985, 57, 165-168; Chem. Abs. 1986, 105, 191422. (d) Danheiser, R. L.; Morin, J. M.; Salaski, E. J. J. Am. Chem. Soc. 1985, 107, 8066-8073. (e) Danheiser, R. L.; Morin, J. M.; Yu, M.; Basak, A. Tetrahedron Lett. 1981, 22, 4205-4208.
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0343368967
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For some earlier examples of cationic cyclizations initiated by electrocyclic cleavage of gem-dibromocyclopropanes see: (a) Gassman, P. G.; Tan, L.; Hoye, T. R. Tetrahedron Lett. 1996, 37, 439-442. (b) Hemmingsen, T. H.; Svendsen, J. S.; Sydnes, L. K. Acta Chem. Scand. 1988, B42, 651-661. (c) Brocksom, T. J.; Canevarolo, E. T.; Lopes, F. T. An. Acad. Bras. Cienc. 1985, 57, 165-168; Chem. Abs. 1986, 105, 191422. (d) Danheiser, R. L.; Morin, J. M.; Salaski, E. J. J. Am. Chem. Soc. 1985, 107, 8066-8073. (e) Danheiser, R. L.; Morin, J. M.; Yu, M.; Basak, A. Tetrahedron Lett. 1981, 22, 4205-4208.
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For some earlier examples of cationic cyclizations initiated by electrocyclic cleavage of gem-dibromocyclopropanes see: (a) Gassman, P. G.; Tan, L.; Hoye, T. R. Tetrahedron Lett. 1996, 37, 439-442. (b) Hemmingsen, T. H.; Svendsen, J. S.; Sydnes, L. K. Acta Chem. Scand. 1988, B42, 651-661. (c) Brocksom, T. J.; Canevarolo, E. T.; Lopes, F. T. An. Acad. Bras. Cienc. 1985, 57, 165-168; Chem. Abs. 1986, 105, 191422. (d) Danheiser, R. L.; Morin, J. M.; Salaski, E. J. J. Am. Chem. Soc. 1985, 107, 8066-8073. (e) Danheiser, R. L.; Morin, J. M.; Yu, M.; Basak, A. Tetrahedron Lett. 1981, 22, 4205-4208.
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For some earlier examples of cationic cyclizations initiated by electrocyclic cleavage of gem-dibromocyclopropanes see: (a) Gassman, P. G.; Tan, L.; Hoye, T. R. Tetrahedron Lett. 1996, 37, 439-442. (b) Hemmingsen, T. H.; Svendsen, J. S.; Sydnes, L. K. Acta Chem. Scand. 1988, B42, 651-661. (c) Brocksom, T. J.; Canevarolo, E. T.; Lopes, F. T. An. Acad. Bras. Cienc. 1985, 57, 165-168; Chem. Abs. 1986, 105, 191422. (d) Danheiser, R. L.; Morin, J. M.; Salaski, E. J. J. Am. Chem. Soc. 1985, 107, 8066-8073. (e) Danheiser, R. L.; Morin, J. M.; Yu, M.; Basak, A. Tetrahedron Lett. 1981, 22, 4205-4208.
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For other examples of intramolecular alkylation at carbamate nitrogen see: (a) see ref 3i. (b) Abelman, M. M.; Overman, L. E.; Tran, V. D. J. Am. Chem. Soc. 1990, 112, 6959-6964. (c) Knapp, S.; Kukkola, P. J.; Sharma, S.; Murali Dhar, T. G.; Naughton, A. B. J. J. Org. Chem. 1990, 55, 5700-5710 and references therein. For an excellent recent review on "the tethered nitrogen in natural product synthesis" see: Knapp, S. Chem. Soc. Rev. 1999, 28, 61-72.
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For other examples of intramolecular alkylation at carbamate nitrogen see: (a) see ref 3i. (b) Abelman, M. M.; Overman, L. E.; Tran, V. D. J. Am. Chem. Soc. 1990, 112, 6959-6964. (c) Knapp, S.; Kukkola, P. J.; Sharma, S.; Murali Dhar, T. G.; Naughton, A. B. J. J. Org. Chem. 1990, 55, 5700-5710 and references therein. For an excellent recent review on "the tethered nitrogen in natural product synthesis" see: Knapp, S. Chem. Soc. Rev. 1999, 28, 61-72.
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For other examples of intramolecular alkylation at carbamate nitrogen see: (a) see ref 3i. (b) Abelman, M. M.; Overman, L. E.; Tran, V. D. J. Am. Chem. Soc. 1990, 112, 6959-6964. (c) Knapp, S.; Kukkola, P. J.; Sharma, S.; Murali Dhar, T. G.; Naughton, A. B. J. J. Org. Chem. 1990, 55, 5700-5710 and references therein. For an excellent recent review on "the tethered nitrogen in natural product synthesis" see: Knapp, S. Chem. Soc. Rev. 1999, 28, 61-72.
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For other examples of intramolecular alkylation at carbamate nitrogen see: (a) see ref 3i. (b) Abelman, M. M.; Overman, L. E.; Tran, V. D. J. Am. Chem. Soc. 1990, 112, 6959-6964. (c) Knapp, S.; Kukkola, P. J.; Sharma, S.; Murali Dhar, T. G.; Naughton, A. B. J. J. Org. Chem. 1990, 55, 5700-5710 and references therein. For an excellent recent review on "the tethered nitrogen in natural product synthesis" see: Knapp, S. Chem. Soc. Rev. 1999, 28, 61-72.
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0343368953
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note
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w = 0.030 with 2062 reflections having I > 3σ(I) (from a total of 2305 reflections).
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