2-吡咯烷酮 、
氯乙基异氰酸酯 在
CH2Cl2 ether-n-hexane 、
1-[(2-chloroethyl)carbamoyl]-2-oxopyrrolidine 作用下,
以
toluene-ethyl acetate 为溶剂,
反应 16.0h,
以whereby 107.7 g of the objective compound 1-(2-chloroethylcarbamoyl)-2-oxopyrrolidine (III-1) melting at 66.5°-67.5° C. was obtained as crystals的产率得到1-[(2-chloroethyl)carbamoyl]-2-oxopyrrolidine