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US5068386A
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Preparation of tertiary-hydrocarbylsilyl compounds
Assignee: DuPont Toray Specialty Materials KK
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Filing: 1990-06-01
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Granted: 1991-11-26
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Expires: 2010-06-01
Abstract
Abstract The present invention relates to a method for the preparation of tertiary-hydrocarbylsilyl compounds through a Grignard reaction. A Grignard reagent of formula RMgX, in which R is a tertiary-hydrocarbyl group and X is a halogen atom, is reacted with a silicon compound of formula R 1 a SiX 4-a ; where R 1 is a substituted or unsubstituted monovalent hydrocarbon group and a is an integer with a value of zero to three. The process is ran in the presence of a catalytic quantity of a cyano compound or a thiocyanate compound.
Inventors
- 👤 Akihiko Shirahata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:57
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0803; C07F7/0825; C07F7/0827; C07F7/12; C07F7/121; C07F7/122
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
76 words
A method for preparation of tertiary-hydrocarbylsilyl compounds comprising reacting a Grignard reagent of formula R Mg X; wherein R is a tertiary-hydrocarbyl group and X is a halogen atom; with a silicon compound of formula R.sup.1.sub.a SiX.sub.4-a ; wherein R 1 is a substituted or unsubstituted monovalent hydrocarbon group, X is a halogen atom, and a is an integer with a value of zero to three; in the presence of a cyano compound or thiocyanate compound.
Claim 2
Independent Claim
76 words
A method for preparation of tertiary-hydrocarbylsilyl compounds comprising reacting a Grignard reagent of formula R Mg X; wherein R is a tertiary-hydrocarbyl group and X is a halogen atom; with a silicon compound of formula R.sup.1.sub.a SiX.sub.4-a ; wherein R 1 is a substituted or unsubstituted monovalent hydrocarbon group, X is a halogen atom, and a is an integer with a value of zero to three; in the presence of a cyano compound or thiocyanate compound.
Claim 3
Dependent Claim
18 words
A method according to claim 1, where R is a tertiaryalkyl group and X is a chlorine atom.
Claim 4
Dependent Claim
28 words
A method according to claim 1, where R is a radical selected from a group consisting of tert-butyl, 1,1-dimethylpropyl, 1,1-diethylpropyl, and 1,1-dimethylbenzyl and X is a chlorine atom.
Claim 5
Dependent Claim
30 words
A method according to claim 1, where a is 1 or 2 and R 1 is a radical selected from a group consisting of methyl, ethyl, propyl, vinyl, and allyl.
Claim 6
Dependent Claim
33 words
A method according to claim 1, where a is 1 or 2 and R 1 is a radical selected from a group consisting of methyl, ethyl, propyl, vinyl, allyl, phenyl, naphthyl, and benzyl.
Claim 7
Dependent Claim
28 words
A method according to claim 1, where the cyano compound is selected from a group consisting of silver cyanide, copper cyanide, mercury cyanide, trimethylsilyl cyanide, and tributyltin cyanide.
Claim 8
Dependent Claim
28 words
A method according to claim 1, where the thiocyanate compound is selected from a group consisting of copper thiocyanate, silver thiocyanate, calcium thiocyanate, sodium thiocyanate, and tetrabutylammonium thiocyanate.
Claim 9
Dependent Claim
24 words
A method according to claim 1, where the cyano compound or thiocyanate compound is present at a level of 0.01 to 10 mole percent.
Claim 10
Dependent Claim
24 words
A method according to claim 1, where the cyano compound or thiocyanate compound is present at a level of 0.1 to 2 mole percent.
Claim 11
Dependent Claim
14 words
A method according to claim 1, further comprising the presence of an organic solvent.
Claim 12
Dependent Claim
13 words
A method according to claim 10, where the organic solvent is an ether.
Claim 13
Dependent Claim
26 words
A method according to claim 1, where reacting the Grignard reagent with the silicon compound is conducted within a temperature range of zero to 100° C.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-11-25 | 1995-05-27 | 1995-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-25 | 1999-05-27 | 1999-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-25 | 2003-05-27 | 2003-11-26 | $7700.00 | Window Closed / Lapsed |