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84920362749
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Ref. 1 and preceding issues of the series
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(a) Ref. 1 and preceding issues of the series.
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0027409145
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0001796781
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(c) For a review on vicinally donor-acceptor substituted cyclopropanes see: Reissig, H.-U. Top. Curr. Chem. 1988, 144, 73.
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0028326185
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0001074497
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(a) Reissig, H.-U.; Reichelt, I. Tetrahedron Lett. 1984, 25, 5879. Reissig, H.-U.; Lorey, H. Liebigs Ann. Chem. 1986, 1914.
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84985258725
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0344687894
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25
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(b) Magerramow, A.M.; Gyul'akhmedov, L. M.; Sadovaja, N. K.; Koz'min, A. S. Zh. Org. Khim. 1990, 26, 2333; Chem. Abstr. 1991, 115, 231785u.
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28
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84920343656
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14 hydrolyze very easily; in particular, the former lead to the corresponding ethyl methyl butanedioates, which may be present occasionally in the reaction mixtures
-
14 hydrolyze very easily; in particular, the former lead to the corresponding ethyl methyl butanedioates, which may be present occasionally in the reaction mixtures.
-
-
-
-
30
-
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0001889898
-
-
Patai, S. Ed.; Wiley: New York, chapter 10
-
Capozzi, G.; Modena, G.; Pasquato, L. In The Chemistry of Sulphenic Acids and Their Derivatives; Patai, S. Ed.; Wiley: New York, 1990; chapter 10, p 403.
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Capozzi, G.1
Modena, G.2
Pasquato, L.3
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31
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84920353460
-
-
3, indicated the presence of MeCl. This could not be quantified owing to its volatility
-
3, indicated the presence of MeCl. This could not be quantified owing to its volatility.
-
-
-
-
32
-
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84920339850
-
-
8 Control experiments showed that under above conditions 1c was recovered unchanged even after 10 h
-
8 Control experiments showed that under above conditions 1c was recovered unchanged even after 10 h.
-
-
-
-
33
-
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84920341940
-
-
4
-
4.
-
-
-
-
34
-
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84920343016
-
-
note
-
1H NMR spectral data with those of pairs 3f,h; in particular, syn-3e,g show signals due to chain methylenes in the δ range 1.7-2.2 and anti-3e,g in the δ range 1.5-1.7 as observed for syn-3f,h and anti-3f,h, respectively. In the reactions of 1b with 2b,c only one isomeric 2-sulfenyl-3-methylbutanedioate was obtained in moderate amount; thus, configuration of syn-3b and syn-3c was assigned on the basis of the general stereochemical course which leads to syn-3 as by far the main products.
-
-
-
-
35
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0001129941
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-
Sato, T.; Otera, J.; Nozaki, H. J. Org. Chem. 1990, 55, 6116. Sato, T.; Otera, J. J. Organomet. Chem. 1994, 473, 55. Villa, M. J.; Warren, S. J. Chem. Soc., Perkin Trans. I 1994, 2953.
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Sato, T.1
Otera, J.2
Nozaki, H.3
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36
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0006217542
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Sato, T.; Otera, J.; Nozaki, H. J. Org. Chem. 1990, 55, 6116. Sato, T.; Otera, J. J. Organomet. Chem. 1994, 473, 55. Villa, M. J.; Warren, S. J. Chem. Soc., Perkin Trans. I 1994, 2953.
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Sato, T.1
Otera, J.2
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37
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37049090679
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Sato, T.; Otera, J.; Nozaki, H. J. Org. Chem. 1990, 55, 6116. Sato, T.; Otera, J. J. Organomet. Chem. 1994, 473, 55. Villa, M. J.; Warren, S. J. Chem. Soc., Perkin Trans. I 1994, 2953.
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Villa, M.J.1
Warren, S.2
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39
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0344256162
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Klamann, D., Ed.; Thieme: Stuttgart; Band E11
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Houben-Weyl
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Kreszc, G.1
-
40
-
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0003649925
-
-
Patai, S., Ed.; Wiley: New York, chapter 8
-
It is well-known that the thermal decomposition of sulfoxides bearing a β-hydrogen atom leads stereoselectively to alkenes via a concerted syn-intramolecular mechanism; Braverman, S. In The Chemistry of Sulphenic Acids and Their Derivatives; Patai, S., Ed.; Wiley: New York, 1990; chapter 8, p 311.
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, pp. 311
-
-
Braverman, S.1
-
42
-
-
84920353009
-
-
E2-type attack has been observed as reported in ref 7a
-
E2-type attack has been observed as reported in ref 7a.
-
-
-
-
43
-
-
0025050531
-
-
Lambert, J. B.; Chelius, E. C.; Schulz, W. J. Jr.; Carpenter, N. E. J. Am. Chem. Soc. 1990, 112, 3156.
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Chelius, E.C.2
Schulz W.J., Jr.3
Carpenter, N.E.4
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44
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0000531257
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Coxon, J. M.; Steel, P. J.; Wittington, B. I. J. Org. Chem. 1990, 55, 4136.
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Coxon, J.M.1
Steel, P.J.2
Wittington, B.I.3
-
45
-
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84920346526
-
-
note
-
7a,8,13
-
-
-
-
47
-
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84981755448
-
-
Brintzinger, H.; Pfaunstiel, K.; Koddebusch, H.; Kling, K. Chem. Ber. 1950, 83, 87.
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Chem. Ber.
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Brintzinger, H.1
Pfaunstiel, K.2
Koddebusch, H.3
Kling, K.4
-
48
-
-
84920361817
-
-
In the reactions of 1b,c with 2c a prevailing unidentified product was present which did not interfere in the chromatographic procedures as it is more polar than the reaction products
-
In the reactions of 1b,c with 2c a prevailing unidentified product was present which did not interfere in the chromatographic procedures as it is more polar than the reaction products.
-
-
-
-
49
-
-
84920343425
-
-
-1 for syn-6 and anti-6, respectively
-
-1 for syn-6 and anti-6, respectively.
-
-
-
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