A Convenient Synthetic Methodology for the Elaboration of the Pyrido[2,3-b]-or [3,4-b]-pyrazine and [1,4]diazepine Skeletons
作者:Axel Couture、Pierre Grandclaudon
DOI:10.1055/s-1991-26623
日期:——
The condensation of the anion of 3-(formylamino)-2-chloropyridines, 3-(acetylamino)-2-chloro-, -4-chloro- or -2,4-dichloropyridines with various chloro-N,N-dimethylalkylamines gives rise efficiently to 1,2,3, 4-tetrahydropyrido[2,3-b]- or [3,4-b]- pyrazines and to 2,3,4, 5-tetrahydro-1H-pyrido[2,3-b]- or [3,4-b]-[1,4]diazepines.