Ethanolamine → 2-Amino-6-(2-hydroxy-ethylamino)-N-(5-phenoxy-thiophen-2-ylmethyl)-nicotinamide

Participants

Reaction Conditions

Reaction Steps

2-Amino-6-chloro-N-(5-phenoxy-thiophen-2-ylmethyl)-nicotinamide described in Example A-101 (170 mg, 0.47 mmol) was dissolved in a mixture solution of dimethylsulfoxide (2 mL) and diisopropylethylamine (1 mL), ethanolamine (0.428 mL, 7.1 mmol) was added thereto, followed by heating in a sealed tube for 15 hours 20 minutes (oil bath temperature: 135° C.). The reaction mixture was allowed to room temperature, poured into brine, and the solution was extracted with ethyl acetate. The organic layer was dried over anhydrous magnesium sulfate, then concentrated, the obtained residue was purified by NH silica gel column chromatography (ethyl acetate:hexane=2:1), and the title compound (138 mg, 0.36 mmol, 76%) was obtained.

Provenance & Evidence