Catalytic, Enantioselective N-Acylation of Lactams and Thiolactams Using Amidine-Based Catalysts
作者:Xing Yang、Valentina D. Bumbu、Peng Liu、Ximin Li、Hui Jiang、Eric W. Uffman、Lei Guo、Wei Zhang、Xuntian Jiang、K. N. Houk、Vladimir B. Birman
DOI:10.1021/ja306766n
日期:2012.10.24
contrast to alcohols and amines, racemic lactams and thiolactams cannot be resolved directly via enzymatic acylation or classical resolution. Asymmetric N-acylation promoted by amidine-based catalysts, particularly Cl-PIQ 2 and BTM 3, provides a convenient method for the kinetic resolution of these valuable compounds and often achieves excellent levels of enantioselectivity in this process. Density
Asymmetrichydrogenation of 4-substituted cyclic enamido esters catalyzed by a rhodium–TangPhos complex provides an efficient method for the synthesis of chiral 4-substituted oxazolinones with excellent yields and good enantioselectivities. The products are valuable chiral building blocks and the applications as chiral auxiliaries and pharmaceuticals are well-known.
Kinetic Resolution of 2-Oxazolidinones via Catalytic, Enantioselective N-Acylation
作者:Vladimir B. Birman、Hui Jiang、Ximin Li、Lei Guo、Eric W. Uffman
DOI:10.1021/ja061560m
日期:2006.5.1
Kinetic resolution of racemic 2-oxazolidinones via catalytic, enantioselective N-acylation has been achieved for the first time and with outstanding selectivities.
DRUECKHAMMER, DALE G.;BARBAS, CARLOS F. , III;NOZAKI, KENJI;WONG, CHI-HUE+, J. ORG. CHEM., 53,(1988) N 8, 1607-1611
作者:DRUECKHAMMER, DALE G.、BARBAS, CARLOS F. , III、NOZAKI, KENJI、WONG, CHI-HUE+
DOI:——
日期:——
Chemoenzymic synthesis of chiral furan derivatives: useful building blocks for optically active structures
作者:Dale G. Drueckhammer、Carlos F. Barbas、Kenji Nozaki、Chi Huey Wong、Cynthia Y. Wood、Marco A. Ciufolini