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- W1999866884 abstract "Esterification of cyclic thiohydroxamic acids, for example, N-hydroxypyridine-2(1H)-thione, N-hydroxy-4-methylthiazole-2(3H)-thione, and N-hydroxy-4-(p-chlorophenyl)-thiazole-2(3H)-thione, occurred with inversion of configuration at the attacked stereocenter, as evident from the use of chiral alcohols, alkyl p-toluene sulfonates, and cyclic sulfates. Stereochemical analysis of enantiomerically pure O-alkyl thiohydroxamates was performed on the basis of CD-spectroscopy and chemical derivatization. The assignment of the relative configuration in cyclic O-esters was feasible via NMR spectroscopy, whereas chiral aliphatic glycolato monoesters required hydroxyl group derivatization with chloro-(4R,5R)-bis[(1R,2S,5R)-menth-1-yloxycarbonyl)]-1,3,2-dioxaphospholane for this purpose." @default.
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- W1999866884 date "2009-09-01" @default.
- W1999866884 modified "2023-10-15" @default.
- W1999866884 title "A study on the stereoselectivity of C,O bond formation in esterification of cyclic thiohydroxamic acids" @default.
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- W1999866884 doi "https://doi.org/10.1016/j.tetasy.2009.08.020" @default.
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