作者:C. Wade Downey、Smaranda Craciun、Ana M. Neferu、Christina A. Vivelo、Carly J. Mueller、Brian C. Southall、Stephanie Corsi、Eric W. Etchill、Ryan J. Sault
DOI:10.1016/j.tetlet.2012.08.051
日期:2012.10
β-Sulfonyl enoates may be synthesized through a one-pot two-step sequence from ethyl propiolate with good to excellent selectivity for the Z isomer. Trialkylamines catalyze thioconjugate additions of aryl thiols, and alkoxides catalyze the addition of aliphatic thiols. Addition of meta-chloroperbenzoic acid (mCPBA) and LiClO4 to the reaction mixture provides rapid access to the sulfonyl enoates. Yields
β-磺酰基烯醇酸酯可以通过一锅两步的顺序由丙酸乙酯合成,对Z异构体具有良好的选择性。三烷基胺催化芳基硫醇的硫共轭加成,而醇盐催化脂肪族硫醇的加成。向反应混合物中加入间氯过苯甲酸(m CPBA)和LiClO 4可以快速获得磺酰基烯醇酸酯。纯Z异构体的产率为51-90%。