Thiophene-3-carboxylic acid → N-[1-(3-{[4-(methyloxy)phenyl]amino)-1,2,4-triazin-6-yl)ethyl]-3-thiophenecarboxamide

Participants

Reaction Steps

In a similar manner as described for Intermediate 48, using 6-(1-aminoethyl)-N-[4-(methyloxy)phenyl]-1,2,4-triazin-3-amine (Intermediate 47) (100 mg, 0.41 mmol), and 3-thiophenecarboxylic acid (57 mg, 0.45 mmol). Except, that after 3 hours, the crude reaction mixture was diluted with ethyl acetate and washed twice with dilute aqueous hydrochloric acid (0.2 N) followed by saturated sodium bicarbonate solution. The organic layer was separated, dried with magnesium sulfate, filtered, reduced and then purified by chromatography on silica gel eluting with 40% ethyl acetate, in petrol to afford N-[1-(3-{[4-(methyloxy)phenyl]amino}-1,2,4-triazin-6-yl)ethyl]-3-thiophenecarboxamide (95 mg) as a yellow solid. MS m/z 356 (M+1).

Provenance & Evidence