A Hydrogen Chloride-Free<i>Pinner</i>Reaction Promoted by<i>Lewis</i>Acids
作者:Dominik Pfaff、Gregor Nemecek、Joachim Podlech
DOI:10.1002/hlca.201200435
日期:2012.10
A hydrogenchloride‐free variation of the Pinner reaction was developed, in which alcohols react with carbonitriles to furnish carboxylates. Best results were achieved with aliphatic alcohols, and aliphatic or benzylic nitriles in the presence of 2 equiv. of trimethylsilyl triflate (Me3SiOTf). With these substrates, yields exceeding 80% were achieved. A strictly neutral variation of this protocol is
开发了Pinner反应的无氯化氢变体,其中醇与腈反应生成羧酸盐。在2当量的存在下,使用脂肪族醇,脂肪族或苄基腈可获得最佳结果。三氟甲磺酸三甲基甲硅烷基酯(Me 3 SiOTf)。使用这些基材,可实现超过80%的产率。当1当量时,此协议可能会出现严格中性的变化。将3N Et 3 N加入到反应混合物中。