作者:James D. Wuest
DOI:10.1016/0040-4020(80)80124-4
日期:1980.1
Two major adducts are formed when diarylketenes react with ethoxyacetylene: cyclobutenones, produced by 2+2 cycloadditions characteristic of all ketenes, and norcaradienes, the unexpected products of 2+2+2 cycloadditions. Simpler vinylketenes in which the vinyl group is not incorporated in an aromatic ring yield only products derived from 2+2 cycloadditions.
当二芳基
乙烯酮与
乙氧基乙炔反应时,会形成两个主要的加合物:
环丁烯酮(由所有
乙烯酮具有的2 + 2环加成反应生成)和
降冰片烯(2 + 2 + 2环加成的意外产物)。其中
乙烯基未结合在芳族环中的较简单的
乙烯酮仅产生衍生自2 + 2环加成的产物。