Methods: The synthesis uses urea as material process includes condensation, opening loop, chloridization and nitrosation reaction.
方法以尿素为原料,经缩合, 开环, 氯化,亚硝化而得.
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Through nitrosation , hydrogenate reducion, and acylate three steps, the yield surpass 80 % for the diethyl malonate.
收率相对于丙二酸二乙酯达到了80%以上.
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