title: α-Amidino Rhodium Carbenes: Key Intermediates for the Preparation of (E)-2-Aminomethylene-3-oxoindoles and Pyranoindoles.
abstract: Rhodium-catalyzed reactions of 3-diazoindolin-2-imines with aromatic aldehydes and α,β-unsaturated aldehydes respectively furnished (E)-2-aminomethylene-3-oxoindoles and pyranoindoles in moderate to excellent yields with nice functional group tolerance. The reaction proceeds in a cascade involving α-amidino rhodium carbene as the key intermediate.
authors.affiliation: Department of Chemistry, Zhejiang University , Hangzhou 310027, P. R. China.
authors.forename: Jing
authors.initials: J
authors.lastname: Qian
authors.affiliation: Department of Chemistry, Zhejiang University , Hangzhou 310027, P. R. China.
authors.forename: Guorong
authors.initials: G
authors.lastname: Sheng
authors.affiliation: Department of Chemistry, Zhejiang University , Hangzhou 310027, P. R. China.
authors.forename: Kai
authors.initials: K
authors.lastname: Huang
authors.affiliation: Department of Chemistry, Zhejiang University , Hangzhou 310027, P. R. China.
authors.forename: Shaojie
authors.initials: S
authors.lastname: Liu
authors.affiliation: Department of Chemistry, Zhejiang University , Hangzhou 310027, P. R. China.
authors.forename: Ping
authors.initials: P
authors.lastname: Lu
authors.affiliation: Department of Chemistry, Zhejiang University , Hangzhou 310027, P. R. China.
authors.forename: Yanguang
authors.initials: Y
authors.lastname: Wang