Addition of ArSSAr to dienes via intramolecular C–C bond formation initiated by a catalytic amount of ArS+
作者:Kouichi Matsumoto、Shunsuke Fujie、Seiji Suga、Toshiki Nokami、Jun-ichi Yoshida
DOI:10.1039/b910821a
日期:——
A catalytic amount of electrochemically generated âArS+â (âArS+â = ArS(ArSSAr)+) initiates a cation chain reaction of dienes that involves the addition of ArSSAr associated with stereoselective intramolecular carbonâcarbon bond formation, and the direct (in-cell) electrolysis of a mixture of a diene and ArSSAr with a catalytic amount of electricity also effectively initiates the reaction.
Base catalysed rearrangements involving ylide intermediates. Part 1. The rearrangements of diallyl- and allylpropynyl-ammonium cations
作者:Robert W. Jemison、Trevor Laird、W. David Ollis、Ian O. Sutherland
DOI:10.1039/p19800001436
日期:——
The basecatalysedrearrangements of diallylammonium rations and allylpropynylammonium rations are described. In most cases, the major product arises by a symmetry-allowed [3,2] sigmatropic rearrangement of the intermediateylide. The minor products can be regarded as being derived by homolysis of the ylide into a radical pair followed by recombination.
In the presence of HF-Et3N complexes, the stereoselective cyclization of 5- and 6-alkenals takes place to give five- and six-membered cyclic fluoroalcohols, respectively.
在HF-Et3N复合物存在的情况下,5-和6-烯醛发生立体选择性环化,分别生成五元和六元环状氟醇。
Effect of cation, temperature, and solvent on the stereoselectivity of the Horner-Emmons reaction of trimethyl phosphonoacetate with aldehydes
作者:Scott K. Thompson、Clayton H. Heathcock
DOI:10.1021/jo00297a076
日期:1990.5
Ring Cleavage and Oxidation Reactions of Dimethyldimedone