Patent EP0034425B1 successfully refreshed from Google Patents.
EP0034425B1
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EP
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Process for preparing arylamines
Assignee: Xerox Corp
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Filing: 1981-01-30
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Granted: 1984-05-16
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Expires: 2001-01-30
Abstract
No abstract record available.
Inventors
- 👤 Richard S. Turner
- 👤 Dale S. Renfer
- 👤 John F. Yanus
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 12:47
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/56; C07D209/80; C07D209/82; C07D209/88; C07C; C07C2603/00; C07C2603/02; C07C2603/40; C07C2603/42; C07C2603/50
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
79 words
A process of preparing a tertiary amine by the condensation of a mono- or disecondary amine and a mono- or di-iodoaryl compound, characterised in that the condensation reaction is conducted in the presence of potassium hydroxide and a copper catalyst, and either in the absence of a solvent or with an inert saturated hydrocarbon solvent, in an inert atmosphere, at a temperature from 120°C to 190°C for a period of time sufficient to at least substantially complete the reaction.
Claim 2
Dependent Claim
79 words
A process of preparing a tertiary amine by the condensation of a mono- or disecondary amine and a mono- or di-iodoaryl compound, characterised in that the condensation reaction is conducted in the presence of potassium hydroxide and a copper catalyst, and either in the absence of a solvent or with an inert saturated hydrocarbon solvent, in an inert atmosphere, at a temperature from 120°C to 190°C for a period of time sufficient to at least substantially complete the reaction.
Claim 3
Dependent Claim
12 words
The process of claim 1 wherein the copper catalyst is copper powder.
Claim 4
Dependent Claim
20 words
The process of claim 1 or 2 wherein the reaction is carried out at a temperature from 135°C to 165°C.
Claim 5
Dependent Claim
30 words
The process of any of claims 1-3 wherein the reaction is carried out in the presence of a solvent which is an aliphatic hydrocarbon having a boiling point above 170°C.
Claim 6
Dependent Claim
18 words
The process of claim 4 wherein the solvent is a mixture of C 13 ―C 15 aliphatic hydrocarbons.
Claim 7
Dependent Claim
19 words
The process of any of claims 1-3 wherein the reaction is carried out in the absence of a solvent.
Claim 8
Dependent Claim
16 words
The process of any of claims 1-6, wherein the potassium hydroxide is employed in flake form.
Claim 9
Dependent Claim
20 words
The process of any of claims 1-7 wherein the molar ratio of base to amine is from 1.5:1 to 6:1.
Claim 10
Dependent Claim
70 words
The process of any of claims 1-8 wherein there is employed a mono-secondary amine having the general formula R 2 R 3 NH wherein R 2 and R 3 (which may be the same or different) are alkyl, alkenyl, aryl, alkaryl or aralkyl, or a di-secondary amine having the general formula R 4 HN-R l HR 4 wherein R i is divalent arylene or alkylidene and R 4 is aryl.
References Cited (Backward Citations)
No citation records indexed.
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