4-Chloroaniline → tert-butyl (R)-2-(4-chlorophenylcarbamoyl)pyrrolidine-1-carboxylate

Participants

Reaction Steps

4.82 g (19.5 mmol) of ethyl 2-ethoxy-1,2-dihydroquinoline-1-carboxylate (EEDQ) are added to a suspension of 2.80 g (13.0 mmol) of N-Boc-D-proline and 1.66 g (13.0 mmol) of 4-chloroaniline in 50 ml of toluene, and the mixture is stirred at room temperature for 3 hours. The reaction mixture is filtered, and petroleum ether is added to the filtrate. The precipitate formed is filtered off and dried, giving tert-butyl (R)-2-(4-chlorophenyl-carbamoyl)pyrrolidine-1-carboxylate as colourless crystals; ESI 325.

Provenance & Evidence