US4593112A
Expired / Lapsed
US
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Method for the preparation of a tert-hydrocarbyl silyl compound
Assignee: Shin-Etsu Chemical Co Ltd
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Filing: 1985-04-16
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Granted: 1986-06-03
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Expires: 2005-04-16
Abstract
Abstract A tert-hydrocarbyl, e.g. tert-butyl, silyl compound can be synthesized easily according to the method of the invention in which a tert-hydrocarbylmagnesium halide as a Grignard reagent is reacted with a silane compound having at least one silicon-bonded hydrogen atom and at least one silicon-bonded halogen atom simultaneously in a molecule in a suitable organic solvent so that the halogen atom in the latter reactant is replaced with the tert-hydrocarbyl group in the former reactant to give the desired tert-hydrocarbyl silyl compound in a high yield without the safety problem in the conventional method using a tert-alkyl lithium as the reactant.
Inventors
- 👤 Minoru Takamizawa
- 👤 Toshinobu Ishihara
- 👤 Akira Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:05
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/16; C07F7/0896
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
107 words
A method for the preparation of a tert-hydrocarbyl silyl compound having at least one hydrogen atom directly bonded to the silicon atom which comprises reacting a Grignard reagent represented by the general formula R 1 MgX, in which R 1 is a tert-hydrocarbyl group and X is a halogen atom, and a silane compound represented by the general formula X m R 2 n SiH 4-m-n , in which R 2 is a monovalent hydrocarbon group, X is a halogen atom, m is 1, 2 or 3 and n is zero, 1 or 2 with the proviso that m+n does not exceed 3, in an organic solvent.
Claim 2
Independent Claim
107 words
A method for the preparation of a tert-hydrocarbyl silyl compound having at least one hydrogen atom directly bonded to the silicon atom which comprises reacting a Grignard reagent represented by the general formula R 1 MgX, in which R 1 is a tert-hydrocarbyl group and X is a halogen atom, and a silane compound represented by the general formula X m R 2 n SiH 4-m-n , in which R 2 is a monovalent hydrocarbon group, X is a halogen atom, m is 1, 2 or 3 and n is zero, 1 or 2 with the proviso that m+n does not exceed 3, in an organic solvent.
Claim 3
Dependent Claim
31 words
The method as claimed in claim 1 wherein the reaction of the Grignard reagent and the silane compound is performed at a temperature in the range from 10° to 150° C.
Claim 4
Dependent Claim
26 words
The method as claimed in claim 1 wherein the organic solvent is selected from the class consisting of ether solvents, phosphoramide solvents and aromatic hydrocarbon solvents.
References Cited (Backward Citations)
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US2759959A
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US2894012A
Cited
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Cited
US3426087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-02 | 1989-12-02 | 1990-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-02 | 1993-12-02 | 1994-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-02 | 1997-12-02 | 1998-06-03 | $7700.00 | Window Closed / Lapsed |