Palladium(II)-Catalyzed Michael-Type Hydroarylation of Nitroalkenes Using Aryltins and Sodium Tetraarylborates
作者:Toshiyuki Ohe、Sakae Uemura
DOI:10.1246/bcsj.76.1423
日期:2003.7
variety of aryltin compounds and sodium tetraarylborates can be employed for Michael-type hydroarylation reactions of nitroalkenes to afford β-arylnitroalkanes in moderate to good yields in the presence of either LiCl, MgCl2, or CaCl2 and a catalytic amount of palladium(II) salt (0.05 molar amount) in acetic acid. Results show that 50–70% of aryl groups out of all in these aryl compounds can be transferred
多种芳基锡化合物和四芳基硼酸钠可用于硝基烯烃的迈克尔型加氢芳基化反应,在 LiCl、MgCl2 或 CaCl2 和催化量的钯 (II) 盐存在下,以中等至良好的产率得到 β-芳基硝基烷烃(0.05 摩尔量)在乙酸中。结果表明,在这些芳基化合物中,50-70% 的芳基可以转移到该加氢芳基化的产物中。在某些情况下,添加催化量(0.05-0.10 摩尔量)的路易斯酰氯、BiCl3 或 SbCl3 可大大提高产品收率。