3,4-Diaminopyridine → HCID 15718943, compound

Participants

Reaction Steps

A mixture of 3.3 parts of 3,4-pyridinediamine, 11.2 parts of 3-(2-ethoxyethyl)-2-[[1-(2-isothiocyanatoethyl)-4-piperidinyl]methyl]-3H-imidazo[4,5-b]-pyridine and 90 parts of tetrahydrofuran was stirred overnight at reflux temperature. The reaction mixture was evaporated, yielding 14.5 parts (100%) of N-(4-amino-3-pyridinyl)-N'-[2-[4-[[3-(2-ethoxyethyl)-3H-imidazo[4,5-b]pyridin-2-yl]methyl]-1-piperidinyl]ethyl]thiourea as a residue (compound 138).

Provenance & Evidence