Methyl 3-amino-4-chloro-2-((3-hydroxypropyl)amino]benzoate → Methyl 4-chloro-2-[(3-hydroxypropyl)amino]-3-{[(6-methoxy-4-methylpyridin-3-yl)carbamothioyl]amino}benzoate

Participants

Reaction Conditions

Reaction Steps

A mixture of methyl 3-amino-4-chloro-2-[(3-hydroxypropyl)amino]benzoate (4.00 g, 15.5 mmol) and 5-isothiocyanato-2-methoxy-4-methylpyridine (8.36 g, 46.4 mmol) in tetrahydrofuran (30 mL) was stirred at 70° C. for 8 hr. The mixture was concentrated in vacuo, and the residue was purified by flash column chromatography on silica gel eluting with a 50-100% ethyl acetate/n-hexane gradient mixture. The filtrate was concentrated in vacuo to give methyl 4-chloro-2-[(3-hydroxypropyl)amino]-3-{[(6-methoxy-4-methylpyridin-3-yl)carbamothioyl]amino}benzoate as a brown amorphous (3.90 g).

Provenance & Evidence