反应详情

温度

0 °C

A suspension of D-aspartic acid (10.0 g, 75.1 mmol) in 50 mL methanol is treated with thionyl chloride (8.94 g, 75.1 mmol) at 0° C. The reaction mixture is stirred at 0° C. for 30 min, then at RT for 2 h. The resulting clear solution is diluted with 200 mL diethyl ether with rapid stirring. A white precipitate is formed which is collected by vacuum filtration, washed with diethyl ether and dried to yield 10.7 g (78%) of D-aspartic acid b-methyl ester hydrochloride.

1. waitat RT for 2 h
2. customA white precipitate is formed which
3. filtrationis collected by vacuum filtration
4. washwashed with diethyl ether
5. customdried