Ruthenium-Catalyzed Amination of Secondary Alcohols Using Borrowing Hydrogen Methodology
作者:Kostiantyn O. Marichev、James M. Takacs
DOI:10.1021/acscatal.6b00175
日期:2016.4.1
A new ruthenium complex catalyzes the amination of primary and secondary alcohols and the regioselective mono- and sequential diamination of diols via the borrowing hydrogen pathway. Several variations on new intra- and intermolecular cyclizations of aminoalcohols, diols, and diamines lead to heterocyclic ring systems.
Amides can be synthesized from alkyl iodides and amines in the presence of CO (20–25 atm), without using transition metal catalyst; the radical cascade is initiated thermally using AIBN and allyltributyltin.
An improved method for the N-alkylation of primary amines with primary and secondary alcohols has been developed. Novel, effective catalyst systems, for example, Ru3(CO)12 combined with tri-o-tolylphosphine or n-butyl-di-1-adamantylphosphine, allow for aminations in a good yield under comparatively mild conditions.