A novel and facile synthesis of 7,8-diacylcoumarins
作者:Antigoni Kotali、Ioannis S. Lafazanis、Philip A. Harris
DOI:10.1016/j.tetlet.2007.07.202
日期:2007.10
Oxidation of N-carbonylhydrazones of 7-liydroxy-8-acetylcoumarin with lead tetraacetate results in the synthesis of 7,8-diacylcoumarins in good yields. The reaction proceeds via the transformation of a hydroxy into an acyl group reported for the first time in heterocyclic chemistry. (C) 2007 Elsevier Ltd. All rights reserved.
METHOD FOR PRODUCING POLYDIENES AND POLYDIENE COPOLYMERS WITH REDUCED COLD FLOW
申请人:Bridgestone Corporation
公开号:US20140187725A1
公开(公告)日:2014-07-03
A method for preparing a coupled polymer, the method comprising the steps of: (i) polymerizing monomer to form a reactive polymer, and (ii) reacting the reactive polymer with coumarin or a substituted coumarin compound.