The coupling of alkylboronic acids and esters with Baylis–Hillman derivatives by Lewis base/photoredox dual catalysis
作者:Hongqiang Ye、He Zhao、Shujian Ren、Hongfeng Ye、Dongping Cheng、Xiaonian Li、Xiaoliang Xu
DOI:10.1016/j.tetlet.2019.04.015
日期:2019.5
Utilizing Lewis base/photoredox dual catalysis, carbon radicals generated from either alkylboronic acids or esters were coupled with Baylis–Hillman derivatives under visible light irradiation. This protocol provides a mild and operationally simple method for the synthesis of a variety of α,β-unsaturated carbonyl compounds in a broad scope of the substrates. The mechanism of Lewis base activation and
利用路易斯碱/光氧化还原双重催化,烷基硼酸或酯产生的碳自由基在可见光照射下与Baylis-Hillman衍生物偶联。该方案提供了一种温和且操作简单的方法,可在广泛的底物中合成各种α,β-不饱和羰基化合物。可能涉及路易斯碱活化和还原淬灭循环的机理。