Methyl 3-amino-4-chloro-2-((3-hydroxypropyl)amino]benzoate → Methyl 4-chloro-3-{[(2,6-dibromo-4-hydroxyphenyl)carbamothioyl]amino}-2-[(3-hydroxypropyl)amino]benzoate

Participants

Reaction Conditions

Reaction Steps

A mixture of methyl 3-amino-4-chloro-2-[(3-hydroxypropyl)amino]benzoate (1.00 g, 3.87 mmol), 1,3-dibromo-2-isothiocyanato-5-methoxybenzene (1.50 g, 4.64 mmol) and catalytic amount of 4-dimethylaminopyridine was stirred at 80° C. for 16 h and concentrated in vacuo. The residue was purified by flash column chromatography on silica gel eluting with a 30-70% ethyl acetate/n-hexane gradient mixture to give the title compound as a brown oil (560 mg, 0.963 mmol, 25%).

Provenance & Evidence