First Pinacol Coupling in Emulsified Water: Key Role of Surfactant and Impact of Alternative Activation Technologies
作者:Muriel Billamboz、Christophe Len
DOI:10.1002/cssc.201500108
日期:2015.5.22
For the first time, the influence of surfactants on the radical pinacol coupling reaction is investigated. The rate and selectivity of this reductive C‐C coupling are compared under three different activation technologies: thermal activation, microwave irradiation, and sonication. The use of IgepalCO520, a neutral surfactant, led to the successful conversion of aromatic or α,β‐unsaturated aliphatic
首次研究了表面活性剂对频哪醇偶联反应的影响。在三种不同的活化技术下比较了这种还原性C‐C偶联的速率和选择性:热活化,微波辐射和超声处理。使用中性表面活性剂IgepalCO520,可以成功地将芳族或α,β-不饱和脂族羰基化合物转化为中等至极好的收率(55-90%)。基于微观观察和粒度测量,还提出了对反应涉及的潜在机理的见解。