Direct Synthesis of α‐Allenols from TMS‐Protected Alkynes and Aldehydes Mediated by Tetrabutylammonium Fluoride
作者:Xiaojun Huang、Alejandro Bugarin
DOI:10.1002/chem.201603250
日期:2016.8.26
chemoselective synthesis of α‐allenic alcohols is presented. Tetrabutylammonium fluoride (TBAF) mediated this transformation under mild reaction conditions. A range of functional groups is well‐tolerated in this reaction, while affording adducts in moderate to excellent yields (48–96 %, average 76 %). Mechanistic studies, including the use of tetrabutylammonium hydroxide (TBAH), revealed that the hydroxide ion
介绍了独特的α-烯丙醇的化学选择性合成。四丁基氟化铵(TBAF)在温和的反应条件下介导了这种转化。该反应中的一系列官能团均具有良好的耐受性,同时可提供中等至优异收率的加合物(48%至96%,平均76%)。包括使用四丁基氢氧化铵(TBAH)在内的机械研究表明,氢氧根离子可能是所观察到的重排的原因。