The First Phosphine-Catalyzed Insertion of Tellurium into Sn−Sn and Pb−Pb Bonds: A Simple and Efficient Route to R<sub>3</sub>MTeMR<sub>3</sub> (M = Sn, Pb)
作者:Li-Biao Han、Farzad Mirzaei、Masato Tanaka
DOI:10.1021/om990728s
日期:2000.3.6
elemental tellurium efficiently inserts into Sn−Sn and Pb−Pb bonds under mild conditions to give the corresponding tellurides R3MTeMR3 (M = Sn, Pb) in quantitative yield. Mechanistic study shows that first a phosphine telluride R‘3PTe is formed via the reaction of R‘3P with tellurium, which subsequently reacts with (R3M)2 to produce (R3M)2Te and concomitantly regenerates R‘3P to restart another cycle
在催化量的膦存在下,元素碲在温和条件下有效地插入Sn-Sn和Pb-Pb键中,从而以定量收率得到相应的碲化物R 3 MTeMR 3(M = Sn,Pb)。机理的研究表明,第一膦碲化物R“ 3 P经由R的反应形成的TE” 3 P与碲,其随后发生反应以(R 3 M)2,以产生(R 3 M)2 Te和伴随再生R” 3 P重新开始催化插入的另一个循环。