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
2-氯脒-1,3-二羧酸二乙酯(1a)与乙炔锂在氨水中反应,通过异常取代反应得到4-和6-乙炔基-1,3-二羧酸二乙酯。以类似的方式,一些在 azulene 核的 1- 和 3- 位具有烷氧基羰基和/或氰基取代基的 2-氯茚,得到相应的 4(或 8) - 和 6- 乙炔基芴。当苯乙炔锂、茚化钠和芴化钠用作试剂时,进行相同类型的反应,1a 得到二乙基 4-和 6-(苯乙炔基)-、6-(3-茚基)-和 6-(9-芴基) )azulene-1,3-dicarboxylates,分别。