Lewis and Brønsted Acid Cocatalyzed Reductive Deoxyallenylation of Propargylic Alcohols with 2-Nitrobenzenesulfonylhydrazide
作者:Zhaohong Liu、Peiqiu Liao、Xihe Bi
DOI:10.1002/chem.201404692
日期:2014.12.22
Reductive deoxyallenylation of sterically hindered tertiary propargylic alcohols was realized on reaction with 2‐nitrobenzenesulfonylhydrazide (NBSH) by the combined use of Lewis and Brønsted acid catalysts. This method features a broad substrate scope, mild reaction conditions, and good functional‐group tolerance, and affords various mono‐, di‐, and trisubstituted allenes in good‐to‐excellent yields
通过与路易斯和布朗斯台德酸催化剂的联合使用,与2-硝基苯磺酰肼(NBSH)反应,实现了位阻叔炔丙醇的还原性脱氧烯丙基化。该方法具有广泛的底物范围,温和的反应条件和良好的官能团耐受性,并能以优异的产率提供各种单取代,二取代和三取代的烯。该方法的合成效用通过2 H-色烯和1,2-二氢喹啉的合成得到证明。