Enantiomerically Pure α-Amino Acid Synthesis via Hydroboration−Suzuki Cross-Coupling
作者:Philip N. Collier、Andrew D. Campbell、Ian Patel、Tony M. Raynham、Richard J. K. Taylor
DOI:10.1021/jo010865a
日期:2002.3.1
compound 25 undergo hydroboration with 9-BBN-H followed by palladium-catalyzedSuzukicoupling reactions with aryl and vinyl halides. After one-pot hydrolysis-oxidation, a range of known and novel nonproteinogenic amino acids were isolated as their N-protected derivatives. These novel organoborane homoalanine anion equivalents are generated and transformed under mild conditions and with wide functional
Enantiomerically pure alpha,alpha'-diamino-dicarboxylic acids (R,R)-4, (S,S)-5 and (S,S)-7 have been synthesized starting from the glycine-derived chiral synthon (S,S)-1. (C) 2000 Elsevier Science Ltd. All rights reserved.