Elimination–addition. Part XXI. Addition–dealkylation reactions of acetylenic sulphonium salts with oxygen, sulphur, and nitrogen nucleophiles
作者:J. W. Batty、P. D. Howes、C. J. M. Stirling
DOI:10.1039/p19730000059
日期:——
Reactions of nucleophiles with dimethylprop-2-ynylsulphonium and S-prop-2-ynyltetrahydrothiophenium bromides have been investigated. These salts readily isomerise to the allenic isomers ([graphic omitted]·C:C:C), which are susceptible to nucleophilic addition. The initially formed adducts, according to their structure, undergo several types of subsequent reaction. Most commonly, isomerisation of the