A Three-Step Route to a Tricyclic Steroid Precursor
作者:Douglass F. Taber、Ritesh B. Sheth
DOI:10.1021/jo801767n
日期:2008.10.17
2-Alkyl cyclohexenones are useful intermediates for organic synthesis. The Wittig reaction of a series of aldehydes with (cyclopropylmethyl)triphenylphosphonium bromide delivered the corresponding alkenyl cyclopropanes. UV irradiation in the presence of Fe(CO)5 converted the alkenyl cyclopropanes to the 2-substituted cyclohexenones. This approach enabled a three-step synthesis of the tricyclic core