A General Nickel-Catalyzed Hydroamination of 1,3-Dienes by Alkylamines: Catalyst Selection, Scope, and Mechanism
作者:Jan Pawlas、Yoshiaki Nakao、Motoi Kawatsura、John F. Hartwig
DOI:10.1021/ja017575w
日期:2002.4.1
of the thermodynamics favoring the reaction of a nickel allyl with an amine to form an allylic amine, the thermodynamics favored reaction of a nickel(0) complex with allylic amine in the presence of acid to form a Ni(II) allyl. The realization of these thermodynamics led us to the discovery that nickel and some palladium complexes in the presence or absence of acid catalyze the exchange of the amino
The Aza-Wharton Reaction: Syntheses of Cyclic Allylic Amines and Vicinal Hydroxyamines from the Respective Acylaziridines
作者:Saúl Silva、Paula Rodrigues、Isabel Bento、Christopher D. Maycock
DOI:10.1021/jo5029387
日期:2015.3.20
The Wharton reaction, initially described for acyl epoxides, has been studied using the structurally similar aziridines. By this reaction, a range of cyclic allylicamines and vicinal amino alcohols have been prepared stereoselectively and, in some cases, enantiomerically pure.
Switching and Conformational Fixation of Amides Through Proximate Positive Charges
作者:Amelie L. Bartuschat、Karina Wicht、Markus R. Heinrich
DOI:10.1002/anie.201502474
日期:2015.8.24
Tertiary amides, which usually occur as cis/trans mixtures, can be effectively shifted to the cis conformation by placing a positive charge in close proximity to the amide carbonyl. This effect was used to prepare cis‐configured prolyl amides and to facilitate a strongly rotamer‐dependent radical cyclization.