Catalytic Enantioselective Additions of Indoles to Nitroalkenes
摘要:
A new design principle that provides access to more active thiourea catalysts is described. Highly enantioselective additions of indoles to nitroalkenes are reported using a new quinolinium thioamide catalyst.
A Library of Chiral Imidazoline–Aminophenol Ligands: Discovery of an Efficient Reaction Sphere
作者:Takayoshi Arai、Naota Yokoyama、Akira Yanagisawa
DOI:10.1002/chem.200701439
日期:2008.2.27
ligands. Further reductive alkylation using salicylaldehydes 7-10 provided a series of imidazoline-aminophenol ligands (L9-L24). Analysis by solid-phase catalysis/circular dichroism high-throughput screening of a copper-catalyzed Henry reaction revealed that ligand L25, comprising a (S,S)-diphenylethylenediamine-derived imidazoline, (S)-phenylethylamine, and dibromophenol, was highly efficient, thus providing
Catalytic Enantioselective Additions of Indoles to Nitroalkenes
作者:Madhu Ganesh、Daniel Seidel
DOI:10.1021/ja8063292
日期:2008.12.10
A new design principle that provides access to more active thiourea catalysts is described. Highly enantioselective additions of indoles to nitroalkenes are reported using a new quinolinium thioamide catalyst.