反应详情

温度

0 °C

62 ml (0.85 mole) of thionyl chloride were added to 167 g (0.775 mole) of N-methoxymethylcarbamic acid 3-chlorophenyl ester in 200 ml of carbon tetrachloride. After the evolution of gas had ceased, the mixture was cooled to 0° C, while keeping the reaction mixture stirrable by adding carbon tetrachloride. The precipitate which had separated out was filtered off, rinsed with cold carbon tetrachloride and dried in vacuo at 40° C. 119.5 g (70% of theory) of N-chloromethylcarbamic acid 3-chlorophenyl ester of melting point 90° C were obtained.

1. customThe precipitate which had separated out
2. filtrationwas filtered off
3. washrinsed with cold carbon tetrachloride
4. customdried in vacuo at 40° C