Bis(triphenylstannyl)telluride. A mild and efficient reductive dehalogenation reagent for α-haloketones.
摘要:
Alpha-Haloketones are efficiently reductively dehalogenated by the combination of telluride 1 and potassium fluoride dihydrate in acetonitrile under very mild conditions.
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