反应详情

Batch size: 1.6 g (10.7 mmol) 3-(3-pyridyl)-acrylic acid, 1.9 g (15.0 mmol) oxalyl chloride and 3.9 g (10.0 mmol) 4-{1-[bis-(2-chlorophenyl)-methyl]-piperidine-4-yl}-butylamine. In the purification, chromatographic purification is done twice over silica gel with CHCl3/CH3OH (97/3 and 97/3 to 95/5) and crystallization is from 25 ml acetic acid after drawing off the solvent. Colorless crystals with a MP of 129-131° C. were recovered; yield: 0.6g (11%).

1. customIn the purification, chromatographic purification
2. customis done twice over silica gel with CHCl3/CH3OH (97/3 and 97/3 to 95/5) and crystallization
3. customColorless crystals with a MP of 129-131° C. were recovered