Highly diastereoselective Friedel–Crafts reaction of indoles with an N-tert-butanesulfinylimino ester: an efficient and practical approach to enantiomerically enriched α-(3-indolyl)glycines
作者:Du-Ming Ji、Ming-Hua Xu
DOI:10.1039/b914687c
日期:——
An efficient, mild and general method for the preparation of highly enantiomericallyenriched alpha-(3-indolyl)glycines by the transition-metal-based Lewis acid-catalyzed diastereoselective Friedel-Crafts reaction of indoles with an N-tert-butanesulfinylimino ester has been developed.
Synthesis of 3-Indolylglycine Derivatives via Dinuclear Zinc Catalytic Asymmetric Friedel–Crafts Alkylation Reaction
作者:Xin-Wei Wang、Yuan-Zhao Hua、Min-Can Wang
DOI:10.1021/acs.joc.6b01805
日期:2016.10.7
A direct asymmetric Friedel–Crafts (F–C) alkylation reaction between a wide range of indoles and ethyl 2-(4-methoxyphenylimino)acetate catalyzed by Trost’s dinuclear complex is reported. A series of 3-indolylglycine derivatives were synthesized in enantioselectivity of up to >99% enantiomeric excess (ee) using 10 mol% catalyst loading under mild conditions. This atom economic reaction could be run