Silica supported palladium–NiXantphos complex is an efficient and high turnover heterogeneous catalyst for N-alkylation of amines and α-alkylation of ketones using alcohols under neat conditions at 120–140 °C following hydrogen borrowing strategy.
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
Jerchel; Jung, Chemische Berichte, 1952, vol. 85, p. 1130,1136
作者:Jerchel、Jung
DOI:——
日期:——
Studies on Crude Drugs Effective on Visceral Larva Migrans. Part XVI. Nematocidal Activity of Long Alkyl Chain Amides, Amines, and Their Derivatives on Dog Roundworm Larvae.
activity of amides and amines having a long alkyl chain against the second-stage larva of dog roundworm, Toxocara canis, was examined. Long chain acyl amides with smaller substituents on the nitrogen showed stronger activity and the activity of cyclic amine amides was stronger than that of acyclic ones. In a series of homologous amides, the activity was dependent on the alkyl chain length: it reached