Ligand-Free Nickel-Catalysed 1,4-Addition of Arylboronic Acids to α,β-Unsaturated Carbonyl Compounds
作者:Wen Chen、Lu Sun、Xi Huang、Jiayi Wang、Yanqing Peng、Gonghua Song
DOI:10.1002/adsc.201400761
日期:2015.5.4
catalytic system has been developed for the 1,4‐addition of arylboronic acids to α,β‐unsaturated carbonyl compounds. With catalyst loadings of 1–2 mol%, a series of 1,4‐adducts from chalcones and cinnamates was obtained in moderate to excellent yields within 5–30 min under a nitrogen atmosphere and microwave irradiation. The 1,4‐addition of arylboronic acids to acrylates is less efficient.
已开发出一种简单有效的不含配体的镍基催化体系,用于将芳基硼酸1,4-加成到α,β-不饱和羰基化合物上。当催化剂负载量为1-2 mol%时,在氮气氛和微波辐射下5-30分钟内,从查耳酮和肉桂酸盐中获得了一系列1,4-加合物。芳基硼酸与丙烯酸酯的1,4加成效率较低。