US4897501A
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Process for preparing aminopropyl alkoxy silanes
Assignee: Tonen General Sekiyu KK
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Filing: 1988-07-29
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Granted: 1990-01-30
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Expires: 2008-07-29
Abstract
Abstract In a process for preparing aminopropyl alkoxy silanes comprising reacting an allylamine with a hydro-alkoxy silane in the presence of a rhodium catalyst, the improvement which comprises use of a rhodium phosphide or its oligomer as said rhodium catalyst. By this process the desired gamma-isomer can be prepared in a high selectivity and yield within a short reaction time.
Inventors
- 👤 Kazutoshi Takatsuna
- 👤 Mamoru Tachikawa
- 👤 Kouji Shiozawa
- 👤 Nobukazu Okamoto
- 👤 Yoshiharu Okumura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:38
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0801; C07F7/18; C07F7/1804; C07F7/1872; C07F7/1876
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
193 words
A process for preparing aminopropyl alkoxy silanes which comprises reacting an allylamine of the formula [I] ##STR3## 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 hydro-alkoxy silane of the formula [II] ##STR4## wherein R 4 , R 5 and R 6 , each represents alkyl or alkoxy, at least one of R 4 , R 5 and R 6 , being alkoxy in the presence of a rhodium phosphide of the general formula RhP(R.sub.7 R.sub.8)L.sub.n wherein R 7 and R 8 each is alkyl having from 1 to 20 carbon atoms, alkoxy having from 1 to 20 carbon atoms, aryl having from 6 to 20 carbon atoms or aryloxy having from 6 to 20 carbon atoms, L is olefin, diolefin, aromatic amine, nitrile, isonitrile or carbonyl and n is from 1 to 2, or its oligomer, as a catalyst.
Claim 2
Dependent Claim
193 words
A process for preparing aminopropyl alkoxy silanes which comprises reacting an allylamine of the formula [I] ##STR3## 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 hydro-alkoxy silane of the formula [II] ##STR4## wherein R 4 , R 5 and R 6 , each represents alkyl or alkoxy, at least one of R 4 , R 5 and R 6 , being alkoxy in the presence of a rhodium phosphide of the general formula RhP(R.sub.7 R.sub.8)L.sub.n wherein R 7 and R 8 each is alkyl having from 1 to 20 carbon atoms, alkoxy having from 1 to 20 carbon atoms, aryl having from 6 to 20 carbon atoms or aryloxy having from 6 to 20 carbon atoms, L is olefin, diolefin, aromatic amine, nitrile, isonitrile or carbonyl and n is from 1 to 2, or its oligomer, as a catalyst.
Claim 3
Dependent Claim
148 words
The process in accordance with claim 1 in which the catalyst is selected from [Rh(CO) 2 P Ph 2 ] m , [Rh 3 (P Ph 2 ) 3 (CO) 5 ], [Rh 4 (CO) 5 (P Ph 2 ) 5 ], [Rh(CO) 2 P(t-Bu) 2 ] m , [Rh(COD)P Ph 2 ] m , [Rh(COD) P Me Ph] m , [Rh(C 2 H 4 ) 2 P Ph 2 ] m , [Rh(TFB)P Ph 2 ] m , [Rh(1,5-C 6 H 10 ) P Ph 2 ] m , [Rh(NBD)P Et 2 ] m , [Rh(Dipyridyl)P Me 2 ] m , [Rh(Me CN) 2 P Ph 2 ] m , and [Rh(Me NC) 2 P Me Bu] m wherein Ph is phenyl, COD is cyclooctadiene, Me is methyl, TFB is tetrafluorobenzobarrelene, NBD is norbornadiene, Et is ethyl, Bu is butyl and m is 2, 3 or 4.
Claim 4
Dependent Claim
23 words
The process in accordance with claim 1 in which the allylamine is selected from allylamine, N-methylallylamine, N-ethylallylamine, N,N-dimethylallylamine, N,N-diethylallylamine, 2-methylallylamine, diallylamine and allylethylenediamine.
Claim 5
Dependent Claim
44 words
The process in accordance with claim 1 in which the hydro-alkoxy silane is selected from triethoxy silane, trimethoxy silane, tripropoxy silane, tributoxy silane, methyl dimethoxy silane, ethyl dimethoxy silane, methyl diethoxy silane, dimethyl methoxy silane, trioctyloxy silane, methyl dioctyloxy silane and dimethyl octyloxy silane.
References Cited (Backward Citations)
US4481364A
Cited
US4556722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-29 | 1993-07-31 | 1994-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-29 | 1997-07-31 | 1998-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-29 | 2001-07-31 | 2002-01-30 | $7700.00 | Window Closed / Lapsed |