Oxidative Addition of Pd(0) to Ar−SO<sub>2</sub>R Bonds: Heck-Type Reactions of Sulfones
作者:José Luis García Ruano、José Alemán、Cristina García Paredes
DOI:10.1021/ol060608y
日期:2006.6.1
[reaction: see text] Phenyl vinyl sulfones and sulfoxides react with Pd(OAc)(2) to form styryl sulfoxides and sulfones according to the first Mizoroki-Heck reaction reported for these thio derivatives. Only sulfones are able to react by using catalytic amounts of Pd (up to 1 mol %) in the presence of Ag(2)CO(3). 1,2-Diphenylsulfonyl ethenes, alkynylphenyl sulfones, and other sulfones, less prone to act as acceptors
[反应:请参见文本]根据有关这些硫代衍生物的第一个Mizoroki-Heck反应,苯基乙烯基砜和亚砜与Pd(OAc)(2)反应形成苯乙烯基亚砜和砜。在Ag(2)CO(3)存在的情况下,只有砜能够通过使用催化量的Pd(最高1 mol%)进行反应。1,2-二苯磺酰基乙烯,炔基苯基砜和其他砜在Heck型反应中较不易充当受体,可将芳基转移至丙烯酸烷基酯形成肉桂酸酯。