Deamination of 3-(dialkylamino)-1,4-diarylhex-5-en-1-ynes during vacuum distillation
作者:E. O. Chukhajian、К. G. Shahkhatuni、El. O. Chukhajian、L. V. Ayrapetyan、G. A. Panosyan
DOI:10.1134/s1070428017020063
日期:2017.2
During vacuum distillation of 3-(dialkylamino) derivatives of 1,4-diphenyl- and 4-phenyl-1-(p-chlorophenyl) hex-5-en-1-ynes deamination occurs resulting in a high yield of p-diarylbenzenes. The amines transformation into terbenzenes is a domino-reaction: first step consists in the β-elimination of secondary amines with the generation of conjugated dienyne which via an electrocyclic reaction transforms