PdCl2 in the presence of dppe or Xantphos(t-Bu) as the ligand is found to be an efficient catalyst for the N-alkylation of various primary and cyclic secondary amines using primary alcohols at 90–130 °C under neat conditions. Interestingly, good to excellent yields were achieved when more challenging secondary alcohols were used as alkylating agents at 130–150 °C. The reaction could be easily scaled
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.
GANGULY, SANJOY;ROUNDHILL, D. MAX, POLYHEDRON., 9,(1990) N0, C. 2517-2526
作者:GANGULY, SANJOY、ROUNDHILL, D. MAX
DOI:——
日期:——
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.