Treatment of 1-(2,4,6-cycloheptatrien-1-yl)-2-phenylacetylene (2) with DBU did not give the expected 1-cycloheptatrienylidene-2-phenylethylene (1) and instead its dimers (4,5, and 6). Elucidation of the structure of the dimers 4 and 5, and a plausible mechanism of this facile dimerization reactions are described.
用
DBU 处理 1-(2,4,6-
环庚三烯-1-基)-2-苯基
乙炔(2)并没有得到预期的 1-
环庚三烯亚基-2-苯基
乙炔(1),而是得到了它的二聚体(4、5 和 6)。本文阐述了二聚物 4 和 5 的结构,以及这种简单二聚化反应的合理机理。