US3983150A
Expired / Lapsed
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Method of manufacture of N-alkyliminoalanes
Assignee: Czech Academy of Sciences
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Filing: 1975-03-26
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Granted: 1976-09-28
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Expires: 1995-03-26
Abstract
Abstract A method of producing of N-alkyliminoalanes by reaction of primary amines, aluminum and hydrogen at high temperature and pressure and in the presence of an initiator.
Inventors
- 👤 Bohuslav Casensky
- 👤 Jiri Machacek
- 👤 Tomas Hanslik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:14
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/06; C07F5/069
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
78 words
Method for the preparation of N-alkyliminoalanes of the general formula: ##EQU1##wherein R is an alkyl group having from 2-6 carbon atoms and n is an integer from 4 to 8 which comprises reacting a primary amine of the general formula R--NH 2 wherein R is as denoted above, in an organic solvent, with aluminum and hydrogen at a temperature within the range of 70°-240° C at a pressure ranging from 20-500 atmospheres in the presence of an initiator.
Claim 2
Dependent Claim
78 words
Method for the preparation of N-alkyliminoalanes of the general formula: ##EQU1##wherein R is an alkyl group having from 2-6 carbon atoms and n is an integer from 4 to 8 which comprises reacting a primary amine of the general formula R--NH 2 wherein R is as denoted above, in an organic solvent, with aluminum and hydrogen at a temperature within the range of 70°-240° C at a pressure ranging from 20-500 atmospheres in the presence of an initiator.
Claim 3
Dependent Claim
19 words
Method in accordance with claim 1 wherein the initiator is a complex compound of aluminum hydride with a trialkylaminoalane.
Claim 4
Dependent Claim
12 words
Method according to claim 1, wherein the initiator is an alkali metal.
Claim 5
Dependent Claim
10 words
Method according to claim 3, wherein the initiator is sodium.
Claim 6
Dependent Claim
19 words
Method according to claim 1, wherein the initiator is a complex compound of aluminium hydride with alkali metal hydride.
Claim 7
Dependent Claim
21 words
Method according to claim 1, wherein the initiator is aluminium hydride substituted with two alkyls with 1 to 4 carbon atoms.
Claim 8
Dependent Claim
15 words
Method according to claim 1, wherein the initiator is aluminium hydride substituted with an alkyliminogroup.
Claim 9
Dependent Claim
46 words
Method according to claim 1, wherein the primary amine is isopropylamine and the reaction is carried out in benzene medium at a temperature in the range from 150° to 200° C, and wherein the initiator is a part of the reaction mixture from the preceding synthesis.
References Cited (Backward Citations)
US3651064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-28 | 1980-03-29 | 1980-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-28 | 1984-03-29 | 1984-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-28 | 1988-03-29 | 1988-09-28 | $7700.00 | Window Closed / Lapsed |