Elusive ethynyl azides: trapping by 1,3-dipolar cycloaddition and decomposition to cyanocarbenes
作者:Klaus Banert、Manfred Hagedorn、Jens Wutke、Petra Ecorchard、Dieter Schaarschmidt、Heinrich Lang
DOI:10.1039/c0cc00079e
日期:——
Although they decompose rapidly to produce cyanocarbenes, ethynyl azides were generated from (chloroethynyl)arenes and trapped for the first time by 1,3-dipolar cycloaddition at cyclooctyne.
Nucleophilic attack on chloro(phenyl)ethyne by azide ion
作者:Ryuichi Tanaka、Kuniaki Yamabe
DOI:10.1039/c39830000329
日期:——
The reaction of chloro(phenyl)ethyne (1) with sodium azide in dimethyl sulphoxide gave the nucleophilic addition product (Z)-α-azido-β-chlorostyrene; phenylethynylnitrane (7) was trapped by the solvent to give N-(phenylethynyl)-S,S-dimethylsulphoximine (4), indicating the prior formation of the hitherto unknown substitution product azido(phenyl)ethyne (6).