Selective monosulfonylation of internal 1,2-diols catalyzed by di-n-butyltin oxide
作者:Michael J Martinelli、Rajappa Vaidyanathan、Vien Van Khau
DOI:10.1016/s0040-4039(00)00500-1
日期:2000.5
The reaction of internal 1,2-diols with catalytic n-Bu2SnO, p-TsCl (1.05 equiv.) and Et3N (1.1 equiv.) led to selective monotosylation. In the case of cyclic substrates, the cis-1,2-diol moiety appeared best suited for optimal results, supporting the intermediacy of a five-membered chelate. (C) 2000 Elsevier Science Ltd. All rights reserved.