(2S)-Pyrrolidine-2-carbonitrile hydrochloride → HCID 67507991, compound

Participants

Reaction Steps

(2S,4R)-4-(2-Benzoxazolyl)amino-1-tert-butoxycarbonylpyrrolidine-2-carboxylic acid (title compound of Reference Example 6, 1.0 g) and (S)-2-cyanopyrrolidine hydrochloride (0.38 g) were dissolved in DMF (10 mL), and triethylamine (0.81 mL), HOBT (0.49 g) and EDC hydrochloride (0.61 g) were successively added thereto. The mixture was stirred at room temperature for 15 hr. Water was added to the reaction mixture, and mixture was extracted with ethyl acetate. The extract was dried and the residue was evaporated under reduced pressure. The residue was purified by silica gel chromatography to give (S)-1-[(2S,4R)-4-(2-benzoxazolyl)amino-1-tert-butoxycarbonyl-2-pyrrolidinylcarbonyl]-2-cyanopyrrolidine (0.91 g) as amorphous.

Provenance & Evidence