Nitrosation in organic chemistry. General synthesis of .alpha.-nitroso ketone acetal dimers and .alpha.-oximino ketone acetals and mechanism of their fragmentation reactions
作者:Karl P. Klein、Timothy R. Demmin、Bryce C. Oxenrider、Milorad M. Rogic、Marvin T. Tetenbaum
DOI:10.1021/jo01316a025
日期:1979.1
Chemoselective and Site-Selective Reductions Catalyzed by a Supramolecular Host and a Pyridine–Borane Cofactor
作者:Mariko Morimoto、Wendy Cao、Robert G. Bergman、Kenneth N. Raymond、F. Dean Toste
DOI:10.1021/jacs.0c12479
日期:2021.2.3
supramolecular system where coencapsulation of pyridine-borane with a variety of molecules including enones, ketones, aldehydes, oximes, hydrazones, and imines effects efficient reductions underbasic aqueous conditions. Upon subjecting unprotected lysine to the host-mediated reductive amination conditions, we observed excellent ε-selectivity, indicating that differential guest binding within the same molecule