Sequenced Reactions with Samarium(II) Iodide. Tandem Intramolecular Nucleophilic Acyl Substitution/Intramolecular Barbier Cyclizations
作者:Gary A. Molander、Christina R. Harris
DOI:10.1021/ja00118a007
日期:1995.4
Samarium(II) iodide has been employed to promote a tandem intramolecular nucleophilic acyl substitution/intramolecular Barbier cyclization sequence, generating bicyclic and tricyclic ring systems in excellent yield and high diastereoselectivity. Additionally, a highly versatile ring expansion-cyclization sequence allows entry into several different naturally occurring tricyclic ring systems containing seven- and eight-membered rings.