report their enantioselectivesynthesis by α-arylation of primary aliphatic and benzylic alcohols under sequential catalysis integrating a Ru-catalyzed hydrogen transfer oxidation and a Ru-catalyzed nucleophilic addition. The method can be applied to various alcohols and aryl nucleophiles tolerating a range of functional groups, including secondary alcohols, ketones, alkenes, esters, NH amides, tertiary
Selective oxidation of primary-secondary diols with methyl hypochlorite in acid buffered medium
作者:Patrick S.G. Tassignon、Dick de Wit、Theo C. de Rijk、Laurent F. De Buyck
DOI:10.1016/0040-4020(95)00747-v
日期:1995.10
A convenient, low cost method was developed for the selectiveoxidation of secondary alcohols, leaving primary alcohol functions intact. Methyl hypochlorite, generated from chlorine or trichloroisocyanuric acid in methanol, is used as a ‘positive chlorine’ reagent in the presence of an appropriate buffer which is acidic enough to warrant good transfer of ‘positive chlorine’. 1,9(R)-octadecanediol was