Patent US4927953A successfully refreshed from Google Patents.
US4927953A
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Process for preparing aminopropyl silanes
Assignee: Tonen General Sekiyu KK
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Filing: 1989-09-11
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Granted: 1990-05-22
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Expires: 2009-09-11
Abstract
Abstract A process for preparing aminopropyl silanes comprises reacting an allylamine with a hydrosilane in the presence of a ruthenium compound having at least one tertiary phosphine ligand as a catalyst. By the proposed process the corresponding gamma-aminopropyl silane can be prepared in a high yield in a short period of reaction time.
Inventors
- 👤 Kazutoshi Takatsuna
- 👤 Kouji Shiozawa
- 👤 Yoshiharu Okumura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:18
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C07F7/1872; C07F7/1876
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
97 words
A process for preparing aminopropyl silanes which comprises reacting an allylamine of the formula [I] ##STR5## wherein R 1 and R 2 , each represents hydrogen, alkyl having from 1 to 10 carbon atoms, alkenyl having from 2 to 10 carbon atoms, phenyl, substituted phenyl, --CH 2 CH 2 NHCH 2 CH 2 NH 2 or --CH 2 CH 2 NH 2 , and R 3 is hydrogen or alkyl having from 1 to 6 carbon atoms with a hydrosilane in the presence of a ruthenium compound having at least one tertiary phosphine ligand as a catalyst.
Claim 2
Dependent Claim
97 words
A process for preparing aminopropyl silanes which comprises reacting an allylamine of the formula [I] ##STR5## wherein R 1 and R 2 , each represents hydrogen, alkyl having from 1 to 10 carbon atoms, alkenyl having from 2 to 10 carbon atoms, phenyl, substituted phenyl, --CH 2 CH 2 NHCH 2 CH 2 NH 2 or --CH 2 CH 2 NH 2 , and R 3 is hydrogen or alkyl having from 1 to 6 carbon atoms with a hydrosilane in the presence of a ruthenium compound having at least one tertiary phosphine ligand as a catalyst.
Claim 3
Dependent Claim
30 words
The process as claimed in claim 1 wherein said ruthenium compound having at least one tertiary phosphine ligand is tricarbonyl-bis(triphenylphosphine) ruthenium, dichloro-tris(triphenylphosphine) ruthenium, hydridochloro-tris(triphenylphosphine) ruthenium, dihydrido-tetrakis(triphenylphosphine) ruthenium or ethylene-tris(triphenylphosphine) ruthenium.
Claim 4
Dependent Claim
36 words
The process as claimed in claim 1 wherein said ruthenium compound having at least one tertiary phosphine ligand is used in an amount of from 10 -6 to 10 -3 mole per mole of the allylamine.
Claim 5
Dependent Claim
24 words
The process as claimed in claim 1 wherein the reaction is carried out at a temperature of from about 100° C. to 200° C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-21 | 1993-11-20 | 1994-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-21 | 1997-11-20 | 1998-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-21 | 2001-11-20 | 2002-05-22 | $7700.00 | Window Closed / Lapsed |