The reaction of acetylenes with compounds containing Fe–Aryl bonds. A convenient and novel synthesis of indenones
Abstract
The reaction of diphenylacetylene with (η5-C5H5)Fe(CO)2Ar (3) affords the indenones (4) and/or (5); a cyclohexadienyliron derivative (10) is obtained when the acetylene is 2-ethynylpyridine, the structure of which was determined by X-ray crystallography.