Copper(I)-Catalyzed Amination of Propargyl Esters. Selective Synthesis of Propargylamines, 1-Alken-3-ylamines, and (Z)-Allylamines
摘要:
Copper(I)-catalyzed aminations of propargyl phosphates and acetates proceed under mild reaction conditions to give the corresponding propargylamines which are precursors of 1-alken-3-ylamines and (Z)-allylamines.
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
Palladium-catalyzedcarbonylation of allylamines under CO (50atm) at 110°C proceeds highly efficiently to give the corresponding β,γ-unsaturated amides. The carbonylation occurs at the less substituted carbon of allyl units to give linear amides with high regioselectivity. The reaction can be rationalized by assuming the mechanism which involves oxidative addition of palladium (0) species to allylamines