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2
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0018173172
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Albers-Schönberg, G.; Arison, B. H.; Hensens, O. D.; Hirshfield, J.; Hoogsteen, K.; Kaczka, E. A.; Rhodes, R. E.; Kahan, J. S.; Kahan, F. M.; Ratcliffe R. W.; Walton, E.; Ruswinkle, L. J.; Morin, R. B.; Christensen, B. G. J. Am. Chem. Soc. 1978, 100, 6491-6499.
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Morin, R.B.13
Christensen, B.G.14
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3
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0042752702
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Diastereosetective syntheses: (a) Ihara, M.; Konno, F.; Fukumoto, K; Kametani, T. Heterocycles 1983, 20, 2181-2184.
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0020525187
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Shibasaki, M.1
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7
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0032544469
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and references therein
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(a) For a recent application to β-lactone synthesis, see: Dirat, O.; Kouklovsky, C.; Langlois, Y. J. Org. Chem. 1998, 63, 6634-6642 and references therein.
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Dirat, O.1
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(b) Dirat, O.; Kouklovsky, C.; Langlois, Y. Org. Lett. 1999, 1, 753-755.
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(c) Dirat, O.; Kouklovsky, C.; Langlois, Y.; Lesot, P.; Courtieu. J. Tetrahedron: Asymmetry 1999, 10, 3197-3207.
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Dirat, O.1
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Lesot, P.4
Courtieu, J.5
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10
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0031955735
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(d) For a review on oxazoline N-oxides [2 + 3] cycloadditions, see: Langlois, Y. Curr. Org. Chem. 1998, 2, 1-18.
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Langlois, Y.1
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11
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11544346529
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(e) For a review on asymmetric 1,3-dipolar cycloadditions, see: Gothelf, K. V.; Jorgensen, K. A. Chem. Rev. 1998, 98, 863-903.
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12
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0032541687
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For the use of cyanomethylenecyclopropane in [2 + 3] and [2 + 4] cycloadditions, see: Mauduit, M.; Kouklovsky, C.; Langlois, Y. Tetrahedron Lett. 1998, 39, 6857-6860.
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Mauduit, M.1
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Langlois, Y.3
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13
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0041750861
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-
[2 + 3] cycloaddition between methyl 3-methyl 2-butenoate and nitrile oxide can be performed under forced conditions (large excess of dipolarophile, 130-140°C, 6.5 h), see ref 3a
-
[2 + 3] cycloaddition between methyl 3-methyl 2-butenoate and nitrile oxide can be performed under forced conditions (large excess of dipolarophile, 130-140°C, 6.5 h), see ref 3a.
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15
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0001674261
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(b) Cason, J.; Rinehart, K. L., Jr.; Thornton, S. D., Jr. J. Org. Chem. 1953, 18, 1594-1600.
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18
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(e) Syed, J.; Förster, S.; Effenberger, F. Tetrahedron: Asymmetry 1998, 9, 805-815.
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Syed, J.1
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19
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(f) Lee, A. S.-Y.; Cheng, R.-Y.; Pan, O.-G. Tetrahedron Lett. 1997, 38, 443-446.
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Lee, A.S.-Y.1
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20
-
-
0031794248
-
-
and references therein
-
For aa recent preparation of enamino esters, see: (a) Fustero, S.; de la Torre, M. G.; Jofré, V.; Pérez Carlon, R.; Navarro, A.; Fuentes, A. S.; Carrio, J. S. J. Org. Chem. 1998, 63, 8825-8836 and references therein,
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Fustero, S.1
De La Torre, M.G.2
Jofré, V.3
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Fuentes, A.S.6
Carrio, J.S.7
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21
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(b) Fustero, S.; Diaz, M. D.; Navarro, A.; Salavert, E.; Aguilar, E. Tetrahedron Lett. 1999, 40, 1005-1008.
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Fustero, S.1
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Aguilar, E.5
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23
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0029114274
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-
Oxazoline N-oxide mediated [2 + 3] cycloadditions are genarally endo selective. An exo adduct was nevertehless obtained during cycloaddition with cyclopentadiene as dipolarophile as observed in other [2 + 3] cycloadditions with this particular dienophile, see: Berranger, T.; Langlois, Y. Tetrahedron Lett. 1995, 36, 5523-5526.
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Berranger, T.1
Langlois, Y.2
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24
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4043071644
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(a) Borch, R. F.; Bernstein, M. D.; Durst, H. D. J. Am. Chem. Soc. 1971, 93, 2897-2904.
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Borch, R.F.1
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25
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85068666190
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(b) For a review concerning the use of sodium cyanoborohydride, see: Lane, C. F. Synthesis 1975, 135-146.
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Lane, C.F.1
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26
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85088715920
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-
2, Pd-C, MeOH) induced isomerization from Z to E without any reduction
-
2, Pd-C, MeOH) induced isomerization from Z to E without any reduction.
-
-
-
-
27
-
-
0041750860
-
-
note
-
-3. Absolute configuration established by examination of Bijvoet pairs. Hydrogen atoms fitted at theoretical positions.
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-
-
-
29
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0042251408
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Crystallographic data for compound 17 has been deposited with the Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge, CB2 1EZ, U.K. (CCDC 139126)
-
(c) Crystallographic data for compound 17 has been deposited with the Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge, CB2 1EZ, U.K. (CCDC 139126).
-
-
-
-
30
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0028913777
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Ketol 20 can be transformed into hydroxylamino isoborneol 13 and reused, see: Berranger, T.; Langlois, Y. J. Org. Chem. 1995, 60, 1720-1726.
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J. Org. Chem.
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Berranger, T.1
Langlois, Y.2
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32
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0028130028
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For a review concerning the stereoselective preparation of β-amino acids, see: Dole, D. C. Tetrahedron 1994, 50, 9517-9582.
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(1994)
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Dole, D.C.1
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