The combination of IrCl(CO)(PPh3)2 with 1,1,3,3-tetramethyldisiloxane or poly(methylhydrosiloxane) (PMHS) is found to be an efficient catalyst system for the preparation of aldenamines from carboxamides; in particular, facile removal of silicone and iridium residues from the product can be achieved by the use of PMHS.
已发现IrCl(CO)(PPh3)2与1,1,3,3-四甲基二
硅氧烷或聚(甲基氢
硅氧烷)(PMHS)的组合是从羧酰胺制备醛胺的有效催化剂体系。特别是,通过使用PMHS可以轻松地从产品中去除有机
硅和
铱残留物。