Triethylamine → HCID 11719511, compound

Participants

Reaction Steps

0.25 g (1.46 mmol) of 4-chlorophenylacetic acid and 0.36 g (1.46 mmol) of ethyl 2-ethoxy-1,2-dihydroquinoline-1-carboxylate (EEDQ) are added successively at room temperature to a solution of 0.5 g (1.46 mmol) of N-[4-(3-oxomorpholin-4-yl)phenyl]-(2R,4R)-4-hydroxypyrrolidine-2-carboxamide (Example 7.2) and 0.2 ml of triethylamine in 20 ml of toluene. The resultant reaction mixture is subsequently left to stir at room temperature for 12 hours, then washed successively with 10 ml of 1N hydrochloric acid and 10 ml of saturated sodium hydrogencarbonate solution, and the organic phase is dried over sodium sulfate. After the solvent has been stripped off, the crude product is purified by preparative HPLC, giving 0.31 g (46.4%) of N-[4-(3-oxomorpholin-4-yl)phenyl]-(2R,4R)-1-[2-(4-chlorophenyl)acetyl]-4-hydroxypyrrolidine-2-carboxamide as a white powder, ESI 458, m.p. 141°.

Provenance & Evidence