4-Chloro-6,7-dimethoxyquinazoline → HCID 23132487, compound

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Reaction Steps

N-[6-(6,7-Dimethoxyquinazolin-4-ylamino)benzothiazol-2-yl]isonicotinamide was prepared by heating a mixture of N-(6-aminobenzothiazol-2-yl)isonicotinamide Intermediate 3, 50 mg, 0.185 mmol) and 4-chloro-6,7-dimethoxyquinazoline (Fluorochem, 42 mg, 0.185 mmol in ethanol (3 mL) to 80° C. for 2 h. The resulting precipitate was separated by filtration, washed with ethanol and dried (yellow solid, 82 mg, 0.179 mmol, 97%). LC/ESI-MS: m/z 459 [M+H]+; m/z=457 [M−H]−; Rt=2.65 min.

Provenance & Evidence