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Bromodimethylsulfonium bromide (BDMS) mediated dithioacetalization of carbohydrates under solvent-free conditions

, : Bromodimethylsulfonium bromide (BDMS) mediated dithioacetalization of carbohydrates under solvent-free conditions. Carbohydrate Research 345(15): 2139-2145

A variety of diethyl dithioacetals of sugars can be prepared in very good yields by the reaction of various monosaccharides with ethanethiol in the presence of 3 mol% bromodimethylsulfonium bromide (BDMS) at 0-5°C. Similarly, dipropyl dithioacetal derivatives can also be obtained in good yields using propanethiol under identical reaction conditions. These dithioacetal derivatives were characterized by per-O-acetylation using silica gel-supported perchloric acid. The significant features of the present protocol are good-to-excellent yields, mild, clean, and solvent-free reaction conditions. This method is extremely suitable for the large-scale preparation of dithioacetal derivatives of various sugars.


PMID: 20817155

DOI: 10.1016/j.carres.2010.07.044

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Plateaux Quenu, C., 1979: Who replaces the queen in a queenless cluster of worker Evylaeus calceatus?. If a group of E. calceatus workers loses its queen prematurely, the function of egg laying is taken on by the worker which emerged first; the other workers forage and do not lay eggs even if they are much larger. P. Walker.

Geary, G.G.; Duckles, S.P.; Krause, D.N., 1995: Melatonin is a direct vasoconstrictor in cerebral arteries. Society for Neuroscience Abstracts 21(1-3): 157

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