Three-Component Friedel-Crafts Reaction of Indoles, Glyoxylate, and Amine under Solvent-Free and Catalyst-Free Conditions - Synthesis of (3-Indolyl)glycine Derivatives
Solvent-free and catalyst-free three-component reactions of indoles, amines, and ethyl glyoxylate gave alkylation products in good to high yields (61-93%), providing a convenient synthesis of (3-indolyl)glycine derivatives.
Ytterbium triflate catalyzed electrophilic substitution of indoles: the synthesis of unnatural tryptophan derivatives
作者:Adam Janczuk、Wei Zhang、Wenhua Xie、Sanzhong Lou、JinPei Cheng、Peng G. Wang
DOI:10.1016/s0040-4039(02)00736-0
日期:2002.6
Benzylamine was combined with ethyl glyoxylate to form the intermediate imine which in the presence of catalytic amount of Yb(OTf)3 underwent electrophilicsubstitution on the 3-position of a variety of indoles to produce unnatural tryptophan derivatives. Penicillin-G-acylase mediated N-acylation produced optically active tryptophan derivatives.
Biphenylphosphine-Palladium(II) Complexes-Catalyzed Friedel-Crafts Reaction for the Synthesis of α-Amino and α-Hydroxy Indolylacetates and Diindolylacetates
Biphenylphosphine-palladium(II) complexes-catalyzed Friedel-Crafts reaction of N-methylindol with imino and carbonyl compounds afforded α-amino and α-hydroxy substituted indolyl-acetates and diindolylacetates in good yields.