首页> 外国专利> process for the manufacture of 1.3 - propandiamin - n, n '- diessigsäure or 2 - hydroxy - 1.3 - propandiamin - n, n' - diessigsäure including säureanlagerungssalze and hexahydropyrimidindiacetate, pro

process for the manufacture of 1.3 - propandiamin - n, n '- diessigsäure or 2 - hydroxy - 1.3 - propandiamin - n, n' - diessigsäure including säureanlagerungssalze and hexahydropyrimidindiacetate, pro

机译：1.3-丙胺嘧啶-n，n'-二乙锭的制备方法或2-羟基-1.3-丙胺胺-n，n'-乙二胺基乙锭和六氢嘧啶双乙酸盐的二巯基乙胺的生产方法及其用途

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PREPARATION OF DIALKALI METAL HEXAHYDROPYRIMIDINE-1,3-DIACETATE AND, DIALKALIMETAL 5-HYDROXYHEXAHYDROPYRIMIDINE-1,3-DIACETATE or, (in which M is an alkali metal ion) is prepared by forming an alkaline aqueous solution of an alkali metal hydroxide and hexahydropyrimidine or 5-hydroxyhexahydropyrimidine and feeding an alkali metal cyanide and aqueous formaldehyde into the alkaline aqueous solution while agitating the resulting reacting mixture and while maintaining its temperature within a range effective for vaporizing byproduct ammonia therefrom, the alkali metal cyanide and the formaldehyde being fed at rates effective for maintaining an excess of unreacted cyanide over unreacted formaldehyde in the reacting mixture. The alkali metal cyanide can be replaced with HCN and an amount of the alkali metal hydroxide about stoichiometrically equivalent to the HCN.

机译：通过形成碱金属氢氧化物和六氢嘧啶的碱水溶液来制备二碱金属六氢嘧啶-1,3-二乙酸酯和二乙金属5-羟基己酸丙啶-1,3-二乙酸酯或（其中M为碱金属离子）的制备方法或5-羟基六氢嘧啶和碱金属氰化物和甲醛水溶液进料到碱性水溶液中，同时搅拌所得的反应混合物，同时保持其温度在有效汽化副产物氨的温度范围内，碱金属氰化物和甲醛以一定速率进料。有效地保持反应混合物中未反应的甲醛比未反应的甲醛过量。碱金属氰化物可以用HCN代替，并且碱金属氢氧化物的量在化学计量上相当于HCN。

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公开/公告号DE2648354C2

专利类型
公开/公告日1992-04-09

原文格式PDF
申请/专利权人 W.R. GRACE & CO.-CONN. NEW YORK N.Y. US;
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申请/专利号DE19762648354
发明设计人 GAUDETTE ROGER ROBERT NASHUA N.H. US;OHLSON JOHN LEONARD BEDFORD MASS. US;SCANLON PATRICIA MARIE ARLINGTON MASS. US;
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申请日1976-10-26
分类号C07D239/04;C07C227/16;C07C229/16;
国家 DE
入库时间 2022-08-22 05:26:39

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