Synthesis of two new heterocyclic systems: Furo[3',2':5,6]pyrimido[2,1-c] [1,2,4]triazines and furo[3,2-e][1,2,3,4]tetrazolo[1,5-a]pyrimidine

Article abstract of DOI:10.1007/BF03246571

Two novel heterocyclic triazines and tetrazole systems were synthesized through cyclization of 2-hydrazino-furo[2,3-d]pyrimidine with α-haloketones and nitrous acid respectively in high yields. The starting 2-hydrazino-pyrimidine was synthesized from 4-im