期刊
JOURNAL OF ORGANOMETALLIC CHEMISTRY
卷 680, 期 1-2, 页码 206-211出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/S0022-328X(03)00349-8
关键词
C-C coupling; amino acids; boronic acids; rhodium; conjugate addition
The enantioselective rhodium-catalysed conjugate addition of aryl boronic acids to dehydroalanine derivatives has been successfully carried out in the presence of C-2-symmetric aryl diphosphite ligand (R,R,R-4) to prepare unnatural amino acid esters. The products have been obtained in up to 72% ee and with good isolated yield. (C) 2003 Elsevier Science B.V. All rights reserved.
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