Hydrophobic Vitamin B<sub>12</sub>. IV. Addition Reactions of Alcohols to Olefins as Catalyzed by Hydrophobic Vitamin B<sub>12</sub>Derivatives
作者:Yukito Murakami、Yoshio Hisaeda
DOI:10.1246/bcsj.58.2652
日期:1985.9
Addition reactions of alcohols to olefins were catalyzed by hydrophobic vitamin B12 derivatives under aerobic irradiation conditions at the room temperature range. Ethyl vinyl ether, 1-pentene, and cyclohexene were adopted as olefins, while heptamethyl methylaquacobyrinate perchlorate and heptamethyl cyanoaquacobyrinate perchlorate were used as the starting complexes. Heptamethyl cobyrinate, which
醇与烯烃的加成反应由疏水性维生素 B12 衍生物在室温范围内的有氧辐照条件下催化。采用乙基乙烯基醚、1-戊烯和环己烯作为烯烃,而高氯酸七甲基甲基水合钴酸盐和七甲基氰基水合钴酸盐高氯酸盐作为起始配合物。通过好氧光解由七甲基甲基水合钴酸盐高氯酸产生的七甲基钴酸盐是研究反应机理的合适催化剂,因为具有钴 - 碳 σ 键的烷基化配合物,反应中间体,具有足够长的寿命,足以在黑暗。另一方面,七甲基氰基钴酸盐衍生自七甲基氰基钴酸盐,作为加成反应的催化剂,其性能优于钴酸七甲酯。该反应通过烷基化配合物的光促进分解进行,催化剂在...