Amidation of silyl enol ethers and cholesteryl acetates with chiral ruthenium(ii) Schiff-base catalysts: catalytic and enantioselective studiesElectronic supplementary information (ESI) available: experimental details. See http://www.rsc.org/suppdata/cc/b1/b109272c/
作者:Jiang-Lin Liang、Xiao-Qi Yu、Chi-Ming Che
DOI:10.1039/b109272c
日期:2002.1.18
Chiral ruthenium(II)–salen complexes [RuII(salen)(PPh3)2] catalyse asymmetric aziridination of alkenes with up to 83% ees, asymmetric amidation of silyl enol ethers with up to 97% ees, and allylic amidation of cholesteryl acetates with good regioselectivity.
作者:Amparo Villar、Claas H. Hövelmann、Martin Nieger、Kilian Muñiz
DOI:10.1039/b505278p
日期:——
Conditions for a first oxidative conversion of alkenes into 2-amino ketones are described, which yield racemic products within a direct oxidation pathway and 2-amino ketones with up to 99% enantiomeric excess from the corresponding enantiopure amino alcohols.
OsO4-catalyzed amination of silyl enol ethers: enantioselective synthesis of α-amino ketones
作者:Prodeep Phukan、A Sudalai
DOI:10.1016/s0957-4166(98)00035-4
日期:1998.3
Osmium tetroxide catalyzed asymmetric aminohydroxylation of silylenolethers using cinchonaalkaloids as chiral ligands and chloramine-T as the nitrogen source affords enantiomerically pure α-amino ketones.
trans-2-(N-benzyl)amino-1-cyclohexanol by hydrogenation and subsequent derivatization give access to a broad variety of diversely substituted derivatives. Furthermore, the corresponding cis isomers are readilyavailable. Applications of these optically active aminocyclohexanols in catalyzed asymmetric phenyl transfer reactions to benzaldehydes and transfer hydrogenations of aryl ketones lead to products with