反应详情

DIPEA (1.34 ml, 7.5 mmol) was added to a solution of 1,1-dimethylethyl (2S)-2-(aminomethyl)-1-pyrrolidinecarboxylate (1g, 5 mmol) in 50 ml of DCM; then chloroacetyl chloride (0.418 ml, 5.25 mmol) was slowly added and the reaction mixture stirred 1 h before being worked up. DCM was added and the organic phase was washed with a saturated solution of ammonium chloride. The crude was purified by flash chromatography eluting with cyclohexane/ethyl acetate 8/2 affording 1.24 g of the target material.

1. washthe organic phase was washed with a saturated solution of ammonium chloride
2. customThe crude was purified by flash chromatography
3. washeluting with cyclohexane/ethyl acetate 8/2 affording 1.24 g of the target material