Diisopropylethylamine → Methyl 4-(1-(2-(2-benzylpyrrolidin-1-yl)-5-chloronicotinamido)cyclopropyl)benzoate

Participants

Reaction Steps

A mixture of 2-(2-benzylpyrrolidin-1-yl)-5-chloronicotinic acid (D100) (70 mg, 0.22 mmol), methyl 4-(1-aminocyclopropyl)benzoate (D7) (50.31 mg, 0.22 mmol) and N,N-Diisopropylethylamine (0.115 ml, 0.66 mmol) in dimethylformamide (5 ml) was stirred at room temperature for 1 h. (Benzotriazol-1-yloxy)tripyrrolidinophosphonium hexafluorophosphate (PyBOP) (137.9 mg, 0.265 mmol) was added and the resulting mixture was stirred overnight at room temperature. The reaction mixture was poured into ice-water and extracted with diethyl ether (3×15 ml). The combined organic layers were washed with brine (2×10 ml), dried over Na2SO4, filtered and concentrated. The crude residue was purified by Biotage column (10 g) eluting with a mixture dichloromethane/ethylacetate from 100/0 to 90/10. Collected fractions, after solvent evaporation, afforded the title compound (D144) (66 mg)

Provenance & Evidence