Regioselective synthesis of substituted thieno[2,3-b]pyrimidines and pyrido[3?,2?:4,5]thienopyrimidines and their [3,2-d]selenopheno analogs from 3-cyanopyridine-2(1H)-thiones, 3-cyano-pyridine-2(1H)-selenones, and N-cyanochloracetamidine
作者:V. A. Artemov、L. A. Rodinovskaya、A. M. Shestopalov、V. P. Litvinov