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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With diethyl malonate as the extractant, the condition of extracting gold the electronic scrap was studied.

研究了采用萃取剂丙二酸二乙酯回收电子废弃物中金的方法.

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