The amination of 2-chloropyrimidines was performed with several aniline derivatives in the presence of tolylzinc bromide as a base. The organozinc compound has a profound effect on the reactivity of the amines, so that the reaction takes place at room temperature. Further studies gave insight into the reaction mechanism and favor a nucleophilic substitution over a catalytic process.
Synthesis, structure, and dynamic behavior in solution of arylamino-1,3,5-triazines
作者:P. A. Belyakov、A. V. Shastin、Yu. A. Strelenko
DOI:10.1007/s11172-006-0135-0
日期:2005.10
3,5-triazines were synthesized and studied by dynamic NMR spectroscopy. The free energies of the hindered rotation ΔG≠?are in 59–77 kJ mol− 1 range. Using difference-mode NOE NMR experiments, the structures of the major and minor rotation isomers were proved. The DFT B3LYP/6-31G* calculations were performed. The difference between the calculated rotation barriers and the experimental values obtained
LiAlH4 and NaBH4 were found to mediate the conversion of 2-(pyrimidyl-2-ylsulfanyl)-N-arylbenzamides and 2-(triazinyl-2-ylsulfanyl)-N-arylbenzamides into pyrimidyl and triazinyl amines under notably mild conditions via a novel reductive rearrangement mechanism. These reactions invent a newroute to prepare amines, which are a kind of important biologically active compounds and provide the first insight