Synthesis of heteroarylidene malonate derived bis(thiazolines) and their application in the catalyzed Friedel–Crafts reaction
摘要:
A series of novel heteroarylidene malonate derived bis(thiazoline) ligands 1 and 2 were synthesized and applied to a Friedel-Crafts reaction between indole and alkylidene malonate. The Cu(OTf)(2) complex of ligand 2b bearing a benzyl group afforded moderate to excellent enantioselectivity for the adducts (up to >99% ee). (C) 2011 Elsevier Ltd. All rights reserved.
Synthesis of heteroarylidene malonate derived bis(thiazolines) and their application in the catalyzed Friedel–Crafts reaction
摘要:
A series of novel heteroarylidene malonate derived bis(thiazoline) ligands 1 and 2 were synthesized and applied to a Friedel-Crafts reaction between indole and alkylidene malonate. The Cu(OTf)(2) complex of ligand 2b bearing a benzyl group afforded moderate to excellent enantioselectivity for the adducts (up to >99% ee). (C) 2011 Elsevier Ltd. All rights reserved.
Highly Enantioselective FriedelâCrafts Reaction of Indole with Alkylidenemalonates Catalyzed by Heteroarylidene Malonate-Derived Bis(oxazoline) Copper(II) Complexes
作者:Yan-Jin Sun、Nan Li、Zhong-Bo Zheng、Lei Liu、Yan-Bo Yu、Zhao-Hai Qin、Bin Fu
DOI:10.1002/adsc.200900669
日期:2009.12
A series of cheap and easily accessible heteroarylidenemalonate-derived bis(oxazoline) ligands 1 and 2 were synthesized and their copper(II) complexes were applied to the catalytic Friedel–Crafts reaction between indoles and diethyl alkylidenemalonates, Excellent asymmetric enantioselectivities were afforded for the S-enantiomer (up to >99% ee) in isobutyl alcohol, and the R-enantiomer (up to 96.5%