Chiral bromine–lithium exchange catalyzed by diamines
摘要:
Different classes of prochiral polyhalide compounds have been tested in a chiral bromine-lithium exchange in the presence of different diamines with enantiomeric excesses of up to 63%. (c) 2009 Elsevier Ltd. All rights reserved.
Double Heck reaction of bridged o , o ′-dibromobiaryls with ethyl acrylate
作者:Mahavir Prashad、Yugang Liu、Xiao Yin Mak、Denis Har、Oljan Repič、Thomas J. Blacklock
DOI:10.1016/s0040-4039(02)02090-7
日期:2002.11
An inter- followed by an intramolecular double Heck reaction of bridged o,o′-dibromobiaryls with ethyl acrylate is described. The nature of the bridging atom/group determined the outcome of the reaction. This double Heck reaction strategy afforded a safe and convenient synthesis of 9-(ethoxycarbonylmethylene)-9H-xanthene and a novel route to 9 and/or 10-substituted anthracene derivatives.
Chiral bromine–lithium exchange catalyzed by diamines
作者:Quentin Perron、Jezabel Praz、Alexandre Alexakis
DOI:10.1016/j.tetasy.2009.02.027
日期:2009.5
Different classes of prochiral polyhalide compounds have been tested in a chiral bromine-lithium exchange in the presence of different diamines with enantiomeric excesses of up to 63%. (c) 2009 Elsevier Ltd. All rights reserved.
Palladium-catalyzed synthesis of fluoreones from bis(2-bromophenyl)methanols
作者:Qian Gao、Senmiao Xu
DOI:10.1039/c7ob02895d
日期:——
Palladium plays a dual role in synthesizing fluorenones from bis(2-bromophenyl)methanols.