O-Phenylenediamine → 2,3-Dihydro-4-[2-(2-methylimidazo[4,5-c]pyrid-1-yl)pyrid-5-yl]-1H-[1,5]benzodiazepin-2-one

Participants

Reaction Steps

The procedure of Example 1 was followed using 1,2-diaminobenzene (86 mg, 0.76 mmol) and ethyl 2-(2-methylimidazo[4,5-c]pyrid-1-yl)pyrid-5-oylacetate (260 mg, 0.80 mmol). The crude product was purified by flash chromatography (eluting with ethyl acetate/methanol =6:1), followed by recrystallisation from acetone to give the title compound (40 mg, 14%) as a buff solid, m.p. 208°-210° C..

Provenance & Evidence