Indium-mediated regioselective synthesis of ketones from arylstannanes under solvent-free ultrasound irradiation
作者:Marcos J. Lo Fiego、Mercedes A. Badajoz、Claudia Domini、Alicia B. Chopa、María T. Lockhart
DOI:10.1016/j.ultsonch.2012.10.018
日期:2013.5
drastically reduced (from 3-32h to 10-70min) under ultrasonic irradiation. Evidences for the involvement of a homolyticaromaticipso-substitution mechanism, in which indium metal acts as radical initiator, are presented. It is possible the transference of two aryl groups from tin, thus improving effective mass yield, working with diarylstannanes as starting substrates.
1,2‐Aryl Migration Induced by Amide C−N Bond‐Formation: Reaction of Alkyl Aryl Ketones with Primary Amines Towards α,α‐Diaryl β,γ‐Unsaturated γ‐Lactams
作者:Rong Hu、Yigao Tao、Xiaofeng Zhang、Weiping Su
DOI:10.1002/anie.202014900
日期:2021.4.6
that incorporates an unusual 1,2‐aryl migration induced by amide C−N bond formation to produce a class of structurally novel α,α‐diaryl β,γ‐unsaturated γ‐lactams in generally good‐to‐excellent yields. This cascade reaction has a broad substrate scope with respect to primary amines, allows a wide spectrum of (hetero)aryl groups to smoothly undergo 1,2‐migration, and tolerates electronically diverse