Radical reactions leading to substituted coumarins
摘要:
The reaction of 4-hydroxycoumarins with a series of quinonic chlorides under photostimulation was shown to provide an efficient approach to 3-alkylated coumarin derivatives, Alkylation reactions of this type proceeded via an electron transfer mechanism (S(RN)1). (C) 1999 Published by Elsevier Science Ltd. All rights reserved.