The Reaction of 2-Chloroazulene Derivatives with Lithium Acetylide in Liquid Ammonia
作者:Tadayoshi Morita、Taira Fujita、Kahei Takase
DOI:10.1246/bcsj.53.1647
日期:1980.6
The reaction of diethyl 2-chloroazulene-1,3-dicarboxylate (1a) with lithium acetylide in liq ammonia gave diethyl 4- and 6-ethynylazulene-1,3-dicarboxylates by an abnormal substitution reaction. In a similar manner, some 2-chloroazulenes, possessing alkoxycarbonyl and/or cyano substituents at the 1- and 3-positions of azulene nucleus, gave the corresponding 4 (or 8)- and 6-ethynylazulenes. The same