Base-catalyzed cross coupling of secondary alcohols and aryl-aldehydes with concomitant oxidation of alcohols to ketones: An alternative route for synthesis of the Claisen-Schmidt condensation products
作者:Naveen Satrawala、Kamal N. Sharma、Leah C. Matsinha、Latisa Maqeda、Shepherd Siangwata、Gregory S. Smith、Raj K. Joshi
DOI:10.1016/j.tetlet.2017.05.093
日期:2017.7
alkanones was obtained in moderate to good yields using various secondary alcohols and substituted aryl-aldehydes. Herein, α,α′-bis-(benzylidene)alkanones, which are the classical products of Claisen-Schmidt (cross aldol) condensation, have been synthesized via an alternative strategy using secondary alcohols. Bis-(benzylidene) alkanones are an integral part of various drug regimes and the production of bis-(benzylidene)
当在催化量(20摩尔%)的K 2 CO存在下,将芳基醛的醇溶液回流搅拌45小时时,实现了碱催化的仲醇与芳基醛的CC交叉偶联3。使用各种仲醇和取代的芳基醛,可以以中等至良好的收率获得一致形成的α,α'-双-(亚苄基)链烷酮。在此,已经通过使用仲醇的替代策略合成了作为克莱森-施密特(十字醇醛)缩合的经典产物的α,α′-双-(亚苄基)链烷酮。双-(亚苄基)链烷酮是各种药物方案和双酚生产中必不可少的部分不使用任何贵金属的-(亚苄基)链烷酮是本反应的主要结果。