The title compound (15) which has two cyclobutadienes fused to a benzene ring, was synthesized by heating dl- (7), meso-3,8-di-t-butyl-1,5,6,10-tetraphenyldeca-3,4,6,7-tetraene-1,9-diyne (8), or E,Z,-3,4-bis (1-t-butyl-3-phenyl-2-propynylidene)-1,2-diphenyl-1-cyclobutene (12).
通过加热 dl- (7), meso-3,8-di-t-butyl-1,5,6,10-tetraphenyldeca-3 合成具有两个稠合到苯环上的
环丁二烯的标题化合物 (15), 4,6,7-tetraene-1,9-diyne (8), or E,Z,-3,4-bis (1-t-butyl-3-phenyl-2-propynylidene)-1,2-diphenyl- 1-
环丁烯(12)。