Water → Tert-butyl 2-(6-(3,4-dimethoxyphenylcarbamoyl)benzo[d]thiazol-2-ylamino)ethyl(methyl)carbamate

Participants

Reaction Conditions

Reaction Steps

A mixture of 2-bromo-N-(3,4-dimethoxyphenyl)benzo[d]thiazole-6-carboxamide (392.4 mg, 0.998 mmol), N-(2-aminoethyl)-N-methyl carbamic acid tert-butyl ester (193.4 mg, 1.11 mmol) and N—N-diisopropylethylamine (148.6 mg, 1.15 mmol) in 1-methyl-2-pyrrolidinone (3 mL) was stirred in a preheated oil bath at 120° C. for 4 h, then allowed to cool to room temperature, poured into water and extracted into ethyl acetate. The organic layer was washed with water, dried (sodium sulfate), filtered and concentrated in vacuo. The resulting residue was purified by gradient flash column chromatography, eluting with 70% to 80% ethyl acetate in heptane to yield tert-butyl 2-(6-(3,4-dimethoxyphenylcarbamoyl)benzo[d]thiazol-2-ylamino)ethyl(methyl)carbamate as a beige powder.

Provenance & Evidence