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    • 1. 发明授权
    • Process for the preparation of 1-(acylaminoalkyl)-2-imidazolines
substituted in the 2 position
    • 制备在2位置取代的1-(氰基氨基)-2-咪唑啉的方法
    • US5144040A
    • 1992-09-01
    • US573041
    • 1990-09-04
    • Georg-Wolfgang EckhardtKarl-Heinz KeilManfred Schrod
    • Georg-Wolfgang EckhardtKarl-Heinz KeilManfred Schrod
    • C07D233/16
    • C07D233/16
    • In a process for preparing 2-substituted 1-(acylaminoalkyl)-2-imidazolines of the general formula I ##STR1## where R is an alkylene radical and R.sup.1 is a fatty acid radical, for example a fatty acid and a dialkylenetriamine are reacted with one another in a molar ratio of (1.8 to 2.0):1 by initially introducing one starting material at a temperature T.sub.1 and metering in the second starting material as a liquid, maintaining in the reaction mixture during the addition a temperature T.sub.1 and after the addition until the start of the cyclization a temperature T.sub.2 and distilling off the resulting water or alcohol via a rectification column and, after the acylation product has been formed, cyclizing in a conventional manner, T.sub.1 being a temperature of 170.degree. C. to the boiling point of the initially introduced starting material, but not higher than 250.degree. C., and T.sub.2 being a temperature of 170.degree. to 250.degree. C.
    • PCT No.PCT / EP89 / 00197 Sec。 371 1990年9月4日第 102(e)1990年9月4日PCT PCT 1989年3月1日提交PCT。 出版物WO89 / 08106 日本1989年9月8日。在制备通式I(I)的2-取代的1-(酰氨基烷基)-2-咪唑啉的方法中,其中R是亚烷基,R 1是脂肪酸基, 例如脂肪酸和二亚烷基三胺通过在温度T1下首先引入一种原料并以第二起始原料计量作为液体,以摩尔比(1.8-2.0):1,彼此反应,保持反应混合物 在添加期间,在加入温度T1之后,直至开始环化为温度T2,经由精馏塔蒸除所得水或醇,在酰化产物形成后,以常规方式环化,T1为 温度为170℃至初始引入的原料沸点,但不高于250℃,T2为170-250℃的温度。