作者:Toyonobu Asao、Noboru Morita、Nobuo Iwagame
DOI:10.1246/bcsj.47.773
日期:1974.3
The reaction of 2-methoxytropone and diphenylketene afforded (2+8)cycloadduct and 1-methoxy-8,8-diphenylheptafulvene which must be formed by the decarboxylation of the initially-formed (2+2)cycloadduct. 2-Dimethylaminotropone also gave the heptafulvene derivative. However, 2-chloro-, 2-cyano-, and 2,5-dimethoxytropone yielded only (2+8)cycloadducts.
2-甲氧基托酮和二苯基乙烯酮的反应得到(2+8)环加合物和1-甲氧基-8,8-二苯基七富烯,它们必须通过最初形成的(2+2)环加合物的脱羧形成。2-二甲基氨基托酮也得到七富烯衍生物。然而,2-氯-、2-氰基-和2,5-二甲氧基托酮仅产生(2+8)环加合物。