Combining chiral elements: a novel approach to asymmetric phase-transfer catalyst design
摘要:
A new dicationic asymmetric phase-transfer catalyst, designed by combining chiral elements, is described. Catalytic testing using standard glycine imino ester alkylations shows good yields and moderate enantioselectivities. (c) 2005 Elsevier Ltd. All rights reserved.
Synthesis and competency of a tartrate-derived dicationic solid–liquid phase-transfer catalyst
摘要:
A new asymmetric phase-transfer catalyst is described, along with a new, flexible synthetic scheme using a tartaric acid chloride. Alkylations and Michael reactions on a glycine imino ester show the new catalyst to be an effective phase-transfer catalyst with limited enantioselectivity. (C) 2004 Published by Elsevier Ltd.
Synthesis and competency of a tartrate-derived dicationic solid–liquid phase-transfer catalyst
作者:Michelle E. Rueffer、Linda K. Fort、Darren K. MacFarland
DOI:10.1016/j.tetasy.2004.09.004
日期:2004.10
A new asymmetric phase-transfer catalyst is described, along with a new, flexible synthetic scheme using a tartaric acid chloride. Alkylations and Michael reactions on a glycine imino ester show the new catalyst to be an effective phase-transfer catalyst with limited enantioselectivity. (C) 2004 Published by Elsevier Ltd.
Combining chiral elements: a novel approach to asymmetric phase-transfer catalyst design
作者:Walter E. Kowtoniuk、Darren K. MacFarland、Gregory N. Grover
DOI:10.1016/j.tetlet.2005.06.084
日期:2005.8
A new dicationic asymmetric phase-transfer catalyst, designed by combining chiral elements, is described. Catalytic testing using standard glycine imino ester alkylations shows good yields and moderate enantioselectivities. (c) 2005 Elsevier Ltd. All rights reserved.