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0010528844
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Compounds 1-6 were prepared by reaction of (R)-(+)-methyl p-tolyl sulfoxide with the corresponding esters in the presence of LDA (see Ref. 4a and references therein). Compound 6, obtained as a mixture of epimers at C-α, was used without separation in further reactions
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17. Compounds 1-6 were prepared by reaction of (R)-(+)-methyl p-tolyl sulfoxide with the corresponding esters in the presence of LDA (see Ref. 4a and references therein). Compound 6, obtained as a mixture of epimers at C-α, was used without separation in further reactions.
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33947290993
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0010527338
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A similar problem has been found in reactions of cyclohexylidenbenzylamine with menthyl p-toluenesulfinate (see Ref. 15c)
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19. A similar problem has been found in reactions of cyclohexylidenbenzylamine with menthyl p-toluenesulfinate (see Ref. 15c).
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31
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Alkylation of Carbon
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0010527578
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note
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24. To check this assumption, we prepared imine 20A and studied its reaction with menthyl p-toluenesulfinate at room temperature. The reaction is completely regioselective, yielding only imino sulfoxide 21A. equation presented
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36
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0010500550
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Configurational assignment of compounds 19A and 19A' could be unequivocally established from the results obtained in the stereoselective reductions of these substrates and mainly from the stereochemistry of rigid cyclic substrates (aziridines and sulfonium salts derived from 1,4 oxathian) obtained from them through stereoselective processes. All these results will be published in due course
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25. Configurational assignment of compounds 19A and 19A' could be unequivocally established from the results obtained in the stereoselective reductions of these substrates and mainly from the stereochemistry of rigid cyclic substrates (aziridines and sulfonium salts derived from 1,4 oxathian) obtained from them through stereoselective processes. All these results will be published in due course.
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37
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0001311980
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Imines, Nitrones, Nitriles, and Isocyanides
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26. See Tennan, G. Imines, Nitrones, Nitriles, and Isocyanides. In Comprehensive Organic Chemistry; Barton, D.; Ollis, W. D., Eds; Pergamon Press: Oxford, 1979, Vol. 2 (Sutherland, I. O., Ed.), p. 397 and references cited therein.
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