Process for the production of 4-hydroxy-2-oxo-pyrrolidin-1-yl acetamide. A 4-(C.sub.1 -C.sub.2)-alkoxy-3-pyrrolin-2-on-1-yl-acetic acid (C.sub.1 -C.sub.4)-alkyl ester of the formula: ##STR1## wherein R.sub.1 is alkyl having 1 or 2 C atoms and R.sub.2 is alkyl having 1 to 4 C atoms, is reacted with either trichloromethylsilane in the presence of an alkali iodide or in an acid anhydrous medium to a 2,4-dioxo-pyrrolidin-1-yl-acetic acid (C.sub.1 -C.sub.4)-alkyl ester. The latter is optionally isolated and then hydrogenated with sodium borohydride to a 4-hydroxy-2-oxo-pyrrolidin-1-yl-acetic acid (C.sub.1 -C.sub.4)-alkyl ester. Finally, the 4-hydroxy-2-oxo-pyrrolidin-1-yl-acetic acid (C.sub.1 -C.sub.4)-alkyl ester is converted by amidation with ammonia to the desired end product.
生产
4-羟基-2-氧代
吡咯烷-1-乙酰胺的方法。将具有以下式子的4-(C.sub.1-C.sub.2)-烷氧基-3-
吡咯烯-2-酮-1-乙酸(C.sub.1-C.sub.4)-烷基酯:##STR1##其中R.sub.1是具有1或2个C原子的烷基,R.sub.2是具有1到4个C原子的烷基,在碱
碘化物的存在下或在酸性无
水介质中与三
氯甲基
硅烷反应,生成2,4-二氧代
吡咯烷-1-乙酸(C.sub.1-C.sub.4)-烷基酯。后者可选择性地分离,然后用
硼氢化钠加氢,生成
4-羟基-2-氧代
吡咯烷-1-乙酸(C.sub.1-C.sub.4)-烷基酯。最后,通过
氨基化反应将
4-羟基-2-氧代
吡咯烷-1-乙酸(C.sub.1-C.sub.4)-烷基酯转化为所需的最终产物。