Triethylamine → HCID 57659779, compound

Participants

Reaction Steps

Triethylamine (TEA) (15.34 ml, 110.1 mmol) and 4-(trifluoromethyl)benzene-1-sulfonyl chloride (8.97 g, 36.7 mmol) were added to a solution of (2S,4R)-methyl 4-hydroxypyrrolidine-2-carboxylate hydrochloride (2) (6.59 g, 36.7 mmol) in dichloromethane (150 ml) in an ice bath. The mixture was warmed to room temperature and stirred overnight at RT., concentrated reaction in vacuo, dissolved in EtOAc and washed with 0.1M aqueous HCl, sat. sodium bicarbonate solution and brine. The organic layers were dried with sodium sulfate and concentrated in vacuo to yield (2S,4R)-methyl 4-hydroxy-1-(4-(trifluoromethyl)phenylsulfonyl)pyrrolidine-2-carboxylate) (3) (9.55 g, 73%) as a white semi-solid, which was used without further purification in the next step. MS m/z 376.1 (M+Na)+; retention time=1.691 min, method [1].

Provenance & Evidence