Invention Grant
- Patent Title: Catalytic hydrogenation for the preparation of amines from amide acetals, ketene N, O-acetals or ester imides
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Application No.: US15034135Application Date: 2014-10-15
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Publication No.: US09890108B2Publication Date: 2018-02-13
- Inventor: Renat Kadyrov
- Applicant: Renat Kadyrov
- Applicant Address: DE Essen
- Assignee: Evonik Degussa GmbH
- Current Assignee: Evonik Degussa GmbH
- Current Assignee Address: DE Essen
- Agency: Law Office of: Michael A. Sanzo, LLC
- Priority: EP13191498 20131105
- International Application: PCT/EP2014/072109 WO 20141015
- International Announcement: WO2015/067448 WO 20150514
- Main IPC: C07C209/52
- IPC: C07C209/52 ; C07B43/04 ; C07C209/68 ; C07C213/00 ; C07C253/30 ; C07D295/023 ; C07D295/027 ; C07D295/03 ; C07C213/02

Abstract:
The present invention relates to a process for the preparation of amines, comprising the following steps: Reaction of a (i) amide acetal of the general formula (I), or (ii) ketene N,O-acetal of the general formula (II), or (iii) ester imide of the general formula (III) with H2 in the presence of a hydrogenation catalyst, where catalyst and amide acetal or ketene N,O-acetal or ester imide are used in a molar ratio of from 1:10 to 1:100 000 and where a hydrogen pressure of from 0.1 bar to 200 bar is established and where a temperature in the range of from 0° C. to 250° C. is established.
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