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3 carboxylic acids, see for example: Hiyama, T. Organofluorine Compounds: Chemistry and Applications; Springer Verlag: Berlin, 2000.
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56249134273
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Aqueous hydrogen peroxide could be replaced by solid urea-hydrogen peroxide adduct (UHP). Under these conditions, acid 4 was isolated in 88% yield.
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Aqueous hydrogen peroxide could be replaced by solid urea-hydrogen peroxide adduct (UHP). Under these conditions, acid 4 was isolated in 88% yield.
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32
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56249090467
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R, MS peaks) with those of authentic samples of dithioester 3, acid 4, ester 5, thiolester 6, thionoester 7, sulfine 8, and dibenzyl disulfide.
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R, MS peaks) with those of authentic samples of dithioester 3, acid 4, ester 5, thiolester 6, thionoester 7, sulfine 8, and dibenzyl disulfide.
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33
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0020284496
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For a study of the mechanism of the conversion of thioamides into amides with hydrogen peroxide at various pH see: Cashman, J. R, Hanzlik, R. P. J. Org. Chem. 1982, 47, 4645
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For a study of the mechanism of the conversion of thioamides into amides with hydrogen peroxide at various pH see: Cashman, J. R.; Hanzlik, R. P. J. Org. Chem. 1982, 47, 4645.
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Oxathiiranes have already been postulated as intermediates for the rearrangement of dithioesters into dithioperoxyesters, see: Metzner, P, Pham, T. N. J. Chem. Soc, Chem. Commun. 1988, 390
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Oxathiiranes have already been postulated as intermediates for the rearrangement of dithioesters into dithioperoxyesters, see: Metzner, P.; Pham, T. N. J. Chem. Soc., Chem. Commun. 1988, 390.
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44
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56249136023
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Despite the fact that only 1 equiv of base is required, using a larger amount reduced the reaction time 1 h instead of 15 h
-
Despite the fact that only 1 equiv of base is required, using a larger amount reduced the reaction time (1 h instead of 15 h).
-
-
-
-
45
-
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56249114571
-
-
Aqueous hydrogen peroxide could be replaced by solid urea-hydrogen peroxide adduct (UHP). Under these conditions, ester 5 was isolated in 50% yield.
-
Aqueous hydrogen peroxide could be replaced by solid urea-hydrogen peroxide adduct (UHP). Under these conditions, ester 5 was isolated in 50% yield.
-
-
-
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