反应详情

To a mixture of 400 ml of water, 80 ml of methanol and 45 g of sodium hydroxide was added 100 g of the dimethyl DL-N-[β-(2-furyl)acryloyl]glutamate, and the resulting mixture was heated at 60° C. to 65° C. for 4 hours to hydrolyze the ester. The reaction mixture was cooled to room temperature and acidified with hydrochloric acid, and thereafter the precipitated crystals were collected by filtration to obtain 80 g (yield 90%) of DL-N-[β-(2-furyl)acryloyl]glutamic acid having a melting point of 166°-170° C.

1. temperaturethe resulting mixture was heated at 60° C. to 65° C. for 4 hours
2. filtrationthe precipitated crystals were collected by filtration