Benzyl chloroformate → Phenylmethyl (3R)-3-[[(1,1-dimethylethoxy)carbonyl]amino]-1-pyrrolidinecarboxylate

Participants

Reaction Conditions

Reaction Steps

A solution of tert-Butyl (3S)-pyrrolidin-3-ylcarbamate (10.0 g, 53.7 mmol) in DCM (40 ml) was treated with TEA (14.9ml, 107 mmol) and cooled to 0° C. Benzyl chloroformate (7.6 ml, 53.7 mmol) was added dropwise and the resulting suspension was allowed to warm gradually to room temperature over a period of 18 hours. The reaction mixture was diluted with water (100 ml) and the organic phase separated. The aqueous phase was extracted with further DCM (2×50 ml) and the combined organic extracts dried (sodium sulphate) and concentrated in vacuo to give a pale yellow solid (14.6 g, 85%)

Provenance & Evidence