发明公开
EP3290401A1 N-SUBSTITUTED ACYCLIC ETHYLENE DIAMINES 审中-公开
N-取代的无环乙烯二胺

N-SUBSTITUTED ACYCLIC ETHYLENE DIAMINES
摘要:
Two alternative methods for producing at least one N-substituted acyclic ethylene diamine are provided:
Method A according to the invention comprises:
- reacting at least one reducing sugar, hydrogen and at least one primary amine NH 2 R or at least one secondary amine NHR'R" or a mixture of at least one primary amine NH 2 R and at least one secondary amine NHR'R"
- in the presence of a supported hydrogenation catalyst
- at a reaction temperature of 50°C to 200 °C, and
- at a reaction pressure being superatmospheric pressure, and wherein
- the molar ratio of the at least one primary amine and/or secondary amine : reducing sugar is at least 4:1.
Method B according to the invention comprises the steps:
1. reacting at least one reducing sugar and at least one primary amine NH 2 R or at least one secondary amine NH 2 R'R" or a mixture of at least one primary amine NH 2 R and at least one secondary amine NHR'R" in a first step, and
2. reacting the reaction mixture obtained in step 1) with hydrogen in the presence of a supported hydrogenation catalyst in a second step.
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