Regioselectivity of Reactions of Nitrogen and Carbon Nucleophiles with Coumarin Derivatives
作者:Perry T. Kaye、Musiliyu A. Musa
DOI:10.1081/scc-200030643
日期:2004.1.1
Abstract Reaction of various 3‐substituted coumarins with nitrogen and carbon nucleophiles appears to involve, in all cases examined, exclusive, direct substitution at the exocyclic C‐1′ electrophilic center.
A Convenient and Improved Baylis-Hillman Synthesis of 3-Substituted 2<i>H</i>-1-benzopyran-2-ones
作者:Perry T. Kaye、Musiliyu A. Musa
DOI:10.1055/s-2002-35984
日期:——
Halogen acid-catalysed deprotection and cyclisation of Baylis-Hillman products obtained using O-benzylated salicylaldehyde precursors has been shown to afford 3-(halomethyl)coumarins (3-halomethyl-2H-1-benzopyran-2-ones) chemoselectively and in good yield.