Chiral ytterbium silylamide catalyzed enantioselective phospha-Michael addition of diethyl phosphite to chalcones
摘要:
An efficient and enantioselective phospha-Michael addition of diethyl phosphite to chalcones has been established. In the presence of a catalytic amount of chiral lanthanide silylamide generated from [(Me3Si)(2)N](3)Yb(mu-Cl)Li(THF)(3) and salen, the reaction produced the target gamma-oxophosphonates with high yields and enantioselectivity. (C) 2014 Elsevier Ltd. All rights reserved.
Chiral ytterbium silylamide catalyzed enantioselective phospha-Michael addition of diethyl phosphite to chalcones
作者:Guoyao Li、Lu Wang、Zhigang Yao、Fan Xu
DOI:10.1016/j.tetasy.2014.06.008
日期:2014.7
An efficient and enantioselective phospha-Michael addition of diethyl phosphite to chalcones has been established. In the presence of a catalytic amount of chiral lanthanide silylamide generated from [(Me3Si)(2)N](3)Yb(mu-Cl)Li(THF)(3) and salen, the reaction produced the target gamma-oxophosphonates with high yields and enantioselectivity. (C) 2014 Elsevier Ltd. All rights reserved.