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1
-
-
0010432386
-
-
For the cyclisation of γ-hydroxy α-diazo-β-sulfonylesters into 3-oxocephan dioxides, see
-
Davies, M. J.; Moody, C. J.; Taylor, R. J. J. Chem. Soc., Perkin Trans. 1 1991, 1-7. For the cyclisation of γ-hydroxy α-diazo-β-sulfonylesters into 3-oxocephan dioxides, see: Crackett, P. H.; Sayer, P.; Stoodley, R. J.; Greengrass, C. W. J. Chem. Soc., Perkin Trans. 1 1991, 1235-1243.
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(1991)
J. Chem. Soc., Perkin Trans.
, vol.1
, pp. 1-7
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Davies, M.J.1
Moody, C.J.2
Taylor, R.J.3
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2
-
-
37049068759
-
-
Davies, M. J.; Moody, C. J.; Taylor, R. J. J. Chem. Soc., Perkin Trans. 1 1991, 1-7. For the cyclisation of γ-hydroxy α-diazo-β-sulfonylesters into 3-oxocephan dioxides, see: Crackett, P. H.; Sayer, P.; Stoodley, R. J.; Greengrass, C. W. J. Chem. Soc., Perkin Trans. 1 1991, 1235-1243.
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(1991)
J. Chem. Soc., Perkin Trans.
, vol.1
, pp. 1235-1243
-
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Crackett, P.H.1
Sayer, P.2
Stoodley, R.J.3
Greengrass, C.W.4
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3
-
-
4243620241
-
-
For the copper catalysed intermolecular insertion reaction of α-diazo-β-ketosulfones into the O-H bond of alcohols, see
-
For the copper catalysed intermolecular insertion reaction of α-diazo-β-ketosulfones into the O-H bond of alcohols, see: Günter, F.; Werner, J.; Schank, K. Liebigs Ann. Chem. 1976, 1713-1726.
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(1976)
Liebigs Ann. Chem.
, pp. 1713-1726
-
-
Günter, F.1
Werner, J.2
Schank, K.3
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4
-
-
0000135677
-
-
For the preparation of cyclopentane derivatives by rhodium(II) catalyzed C-H insertion reaction of α-diazo-β-ketosulfones, see: (a)
-
For the preparation of cyclopentane derivatives by rhodium(II) catalyzed C-H insertion reaction of α-diazo-β-ketosulfones, see: (a) Monteiro, H. J. Tetrahedron Lett. 1987, 28, 3459-3462.
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(1987)
Tetrahedron Lett.
, vol.28
, pp. 3459-3462
-
-
Monteiro, H.J.1
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6
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-
0008256092
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-
©
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© Babu, S. D.; Hrytsak, M. D.; Durst, T. Can. J. Chem. 1989, 67, 1071-1076.
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(1989)
Can. J. Chem.
, vol.67
, pp. 1071-1076
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Babu, S.D.1
Hrytsak, M.D.2
Durst, T.3
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7
-
-
0029932465
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-
(a)
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(a) Collomb, D.; Deshayes, C.; Doutheau, A. Tetrahedron 1996, 52, 6665-6684.
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(1996)
Tetrahedron
, vol.52
, pp. 6665-6684
-
-
Collomb, D.1
Deshayes, C.2
Doutheau, A.3
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8
-
-
0030605908
-
-
(b)
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(b) Collomb, D.; Chantegrel, B.; Deshayes, C. Tetrahedron 1996, 52, 10455-10472.
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(1996)
Tetrahedron
, vol.52
, pp. 10455-10472
-
-
Collomb, D.1
Chantegrel, B.2
Deshayes, C.3
-
10
-
-
0342546632
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-
(d)
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(d) Léost, F.; Chantegrel, B.; Deshayes, C. Tetrahedron 1997, 53, 7557-7576; 1998, 54, 6457-6474.
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(1997)
Tetrahedron
, vol.53
, pp. 7557-7576
-
-
Léost, F.1
Chantegrel, B.2
Deshayes, C.3
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11
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-
0032482307
-
-
(d) Léost, F.; Chantegrel, B.; Deshayes, C. Tetrahedron 1997, 53, 7557-7576; 1998, 54, 6457-6474.
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(1998)
Tetrahedron
, vol.54
, pp. 6457-6474
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-
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13
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0030068385
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Wada, E.; Pei, W.; Yasuoka, H.; Chin, U.; Kanemasa, S. Tetrahedron 1996, 52, 1205-1220.
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(1996)
Tetrahedron
, vol.52
, pp. 1205-1220
-
-
Wada, E.1
Pei, W.2
Yasuoka, H.3
Chin, U.4
Kanemasa, S.5
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14
-
-
84992263759
-
-
All new compounds gave spectral and analytical data in full agreement with proposed structures
-
All new compounds gave spectral and analytical data in full agreement with proposed structures.
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-
-
-
15
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84992287982
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To test the feasibility of the insertion reaction we selected the more commonly used rhodium(II) acetate as the catalyst. We did not yet try to improve the yield by using other rhodium(II) derivatives or reaction conditions
-
To test the feasibility of the insertion reaction we selected the more commonly used rhodium(II) acetate as the catalyst. We did not yet try to improve the yield by using other rhodium(II) derivatives or reaction conditions.
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-
-
-
16
-
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84992259893
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note
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4S: C, 63.56; H, 4.67. Found: C, 64.10; H, 4.70.
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-
-
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17
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0000427084
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Choudhry, S. C.; Serico, L.; Cupano, J. J. Org. Chem. 1989, 54, 3755-3757.
-
(1989)
J. Org. Chem.
, vol.54
, pp. 3755-3757
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-
Choudhry, S.C.1
Serico, L.2
Cupano, J.3
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20
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84992271061
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In the case of 7b the reaction mixture was refluxed for 1 h
-
In the case of 7b the reaction mixture was refluxed for 1 h.
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-
-
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21
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84992285584
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To the best of our knowledge 3-oxo-tetrahydrofurans bearing a sulfonyl group in C-2 position have not yet been described in the literature
-
To the best of our knowledge 3-oxo-tetrahydrofurans bearing a sulfonyl group in C-2 position have not yet been described in the literature.
-
-
-
-
22
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0033609760
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For a recent review on desulfonylation, see
-
For a recent review on desulfonylation, see: Najera, C.; Yus, M. Tetrahedron 1999, 55, 10547-10658.
-
(1999)
Tetrahedron
, vol.55
, pp. 10547-10658
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Najera, C.1
Yus, M.2
-
23
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0001563784
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Smith, A. B.; Hale, K. J.; McCauley, J. P. Tetrahedron Lett. 1989, 30, 5579-5582.
-
(1989)
Tetrahedron Lett.
, vol.30
, pp. 5579-5582
-
-
Smith, A.B.1
Hale, K.J.2
McCauley, J.P.3
-
24
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0030914314
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Calter, M. A.; Sugathapala, P. M.; Zhu, C. Tetrahedron Lett. 1997, 38, 3837-3840.
-
(1997)
Tetrahedron Lett.
, vol.38
, pp. 3837-3840
-
-
Calter, M.A.1
Sugathapala, P.M.2
Zhu, C.3
-
25
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84992263727
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The reduction of the mixture of the two diastereomers of 4c led to only two diastereomers of 10, among four possible. This result is in accordance with the well documented high cis diastereoselectivity of sodium borohydride reduction of β-ketosulfones. Since it was quite unlikely that the success of the chemistry planned to transform 10 into dihydrofuran derivatives, would significantly depend on the cis or trans relationship between the hydroxy-phenylsulfonyl moiety and the phenyl group, at this stage of our work we did not try to assign the stereochemistry of the major and of the minor diastereomer. We further used the former compound obtained in larger amount
-
The reduction of the mixture of the two diastereomers of 4c led to only two diastereomers of 10, among four possible. This result is in accordance with the well documented high cis diastereoselectivity of sodium borohydride reduction of β-ketosulfones. Since it was quite unlikely that the success of the chemistry planned to transform 10 into dihydrofuran derivatives, would significantly depend on the cis or trans relationship between the hydroxy-phenylsulfonyl moiety and the phenyl group, at this stage of our work we did not try to assign the stereochemistry of the major and of the minor diastereomer. We further used the former compound obtained in larger amount.
-
-
-
-
26
-
-
0001026084
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(a)
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(a) de Pouilly, P.; Vauzeilles, B.; Mallet, J.-M.; Sinaÿ, P. C. R. Acad. Sci., Paris 1991, 313, 1391-1394.
-
(1991)
Acad. Sci., Paris
, vol.313
, pp. 1391-1394
-
-
De Pouilly, P.1
Vauzeilles, B.2
Mallet, J.-M.3
Sinaÿ, P.C.R.4
-
27
-
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0000726638
-
-
(b)
-
2 promoted reductive elimination of β-hydroxy imidazolyl sulfones, see: Kende, A. S.; Mendoza, J. S. Tetrahedron Lett. 1990, 31, 7105-7108.
-
(1993)
Bull. Soc. Chim. Fr.
, vol.130
, pp. 256-265
-
-
De Pouilly, P.1
Chénedé, A.2
Mallet, J.-M.3
Sinay, P.4
-
28
-
-
0025650399
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-
2 promoted reductive elimination of β-hydroxy imidazolyl sulfones, see
-
2 promoted reductive elimination of β-hydroxy imidazolyl sulfones, see: Kende, A. S.; Mendoza, J. S. Tetrahedron Lett. 1990, 31, 7105-7108.
-
(1990)
Tetrahedron Lett.
, vol.31
, pp. 7105-7108
-
-
Kende, A.S.1
Mendoza, J.S.2
-
30
-
-
0011879077
-
-
Similar yields have been reported in the literature for sodium amalgam desulfonation of β-hydroxy sulfones leading to cyclopentene derivatives. For example, see
-
Similar yields have been reported in the literature for sodium amalgam desulfonation of β-hydroxy sulfones leading to cyclopentene derivatives. For example, see: Gamble, M. P.; Gibbin, G. M. P.; Taylor, R. J. K. Synlett 1995, 779-780.
-
(1995)
Synlett
, pp. 779-780
-
-
Gamble, M.P.1
Gibbin, G.M.P.2
Taylor, R.J.K.3
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