Regioselective synthesis of 4-chlorophenols, 10-chloro-7-hydroxy-6H-benzo[c]chromen-6-ones, and 4-chloro-1-hydroxy-9H-fluoren-9-ones based on [3+3] cyclizations of 1,3-bis(silyloxy)-1,3-dienes with 2-chloro-3-silyloxy-2-en-1-ones
作者:Mirza Arfan Yawer、Ibrar Hussain、Stefanie Reim、Zafar Ahmed、Ehsan Ullah、Inam Iqbal、Christine Fischer、Helmut Reinke、Helmar Görls、Peter Langer
DOI:10.1016/j.tet.2007.10.027
日期:2007.12
A variety of 4-chlorophenols, 10-chloro-7-hydroxy-6H-benzo[c]chromen-6-ones, and 4-chloro-1-hydroxy-9H-fluoren-9-ones were prepared by formal [3+3] cyclizations of 1,3-bis(silyloxy)-1,3-dienes with 2-chloro-3-(silyloxy)alk-2-en-1-ones. (c) 2007 Elsevier Ltd. All rights reserved.