Synthesis of Highly Substituted Quinolines via a Tandem Ynamide Benzannulation/Iodocyclization Strategy
作者:Thomas P. Willumstad、Paul D. Boudreau、Rick L. Danheiser
DOI:10.1021/acs.joc.5b01648
日期:2015.12.4
A two-stage “tandem strategy” for the regiocontrolled synthesis of very highly substitutedquinolines is described. Benzannulation based on the reaction of cyclobutenones or diazo ketones with N-propargyl-substituted ynamides proceeds via a cascade of several pericyclic reactions to generate multiply substitutedaniline derivatives. In the second stage of the tandem strategy, triflate derivatives of