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    • 15. 发明授权
    • Process for producing imines and/or amines from alcohols
    • 从醇生产亚胺和/或胺的方法
    • US5103058A
    • 1992-04-07
    • US609209
    • 1990-11-05
    • Roy L. PruettMichael J. KeenanEdmund J. Mozeleski
    • Roy L. PruettMichael J. KeenanEdmund J. Mozeleski
    • B01J23/06C07B61/00C07C209/52C07C209/62C07C211/03C07C211/08C07C249/02C07C251/08
    • C07C209/62C07C249/02
    • Process for producing aliphatic imines and/or amines from aliphatic monohydric alcohols, such as higher molecular weight oxo alcohols, including ether alcohols, comprising the steps of dehydrogenating the alcohol to an aldehyde in situ in the presence of a zinc oxide and/or zinc salt/metal hydroxide dehydrogenation catalyst and a soluble amount of a primary aliphatic amine which condenses immediately with the aldehyde under reflux conditions, with continuous water removal, to form the corresponding aliphatic imine (Schiff base). The corresponding aliphatic amine can be formed by reducing or reductively aminating the imine in known manner to form corresponding primary, secondary or tertiary amines as desired. The step of forming the imine is most critical, and the present zinc/metal hydroxide dehydrogenation catalyst system has been found to provide a gentle, inexpensive and efficient conversion of the alcohol to the aldehyde for reaction with the gradually-added primary amine, coupled with the continuous removal of the water of condensation in order to prevent undesired secondary reactions which reduce the yield.
    • 用于由脂族一元醇如高分子量羰基合成醇(包括醚醇)生产脂族亚胺和/或胺的方法,包括以下步骤:在氧化锌和/或锌盐存在下使醇原位脱氢 /金属氢氧化物脱氢催化剂和可溶量的伯脂肪胺,其在回流条件下立即与醛冷凝,并连续除水,形成相应的脂族亚胺(席夫碱)。 相应的脂族胺可以通过以已知方式还原或还原胺化亚胺形成,以根据需要形成相应的伯,仲或叔胺。 形成亚胺的步骤是至关重​​要的,并且已经发现现有的锌/金属氢氧化物脱氢催化剂体系可以提供温和,便宜和有效的醇转化为醛,以与逐渐加入的伯胺反应,加上 连续除去冷凝水,以防止不希望的二次反应降低产率。