A Tandem Conjugate Addition/Cyclization Protocol for the Asymmetric Synthesis of 2-Aryl-4-aminotetrahydroquinoline-3-carboxylic Acid Derivatives
作者:Stephen G. Davies、Nadeam Mujtaba、Paul M. Roberts、Andrew D. Smith、James E. Thomson
DOI:10.1021/ol9004118
日期:2009.5.7
Condensation of tert-butyl (E)-3-(2′-aminophenyl)propenoate with a range of aromatic and heteroaromatic aldehydes gives the corresponding imines as single diastereoisomers (>98% de). Addition of lithium (R)-N-benzyl-N-(α-methylbenzyl)amide initiates a tandem conjugate addition/cyclization reaction to generate 2-aryl-4-aminotetrahydroquinoline-3-carboxylic acid derivatives in >98% de, >98% ee and high isolated