Patent US4332654A successfully refreshed from Google Patents.
US4332654A
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Photoactivated catalytic hydrosilylation of carbonyl compounds
Assignee: Dow Chemical Co
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Filing: 1981-07-17
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Granted: 1982-06-01
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Expires: 2001-07-17
Abstract
Abstract A process to form silyl ethers by contacting a carbonyl compound with an organosilicon hydride under reaction conditions in the presence of a catalyst, said catalyst being formed from a transition metal carbonyl coordination compound precursor by irradiation at an appropriate wavelength.
Inventors
- 👤 Ronald L. Yates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:04
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/132; C07C29/136; C07C29/143; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C07F7/1872; C07F7/188; Y; Y10; Y10S; Y10S204/00; Y10S204/902; Y10S204/908; Y10S204/909
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
40 words
A process comprising contacting a carbonyl compound with an organosilicon hydride under reaction conditions to form a silyl ether in the presence of a catalytic amount of at least one photoactivated species of a transition metal carbonyl coordination compound precursor.
Claim 2
Dependent Claim
40 words
A process comprising contacting a carbonyl compound with an organosilicon hydride under reaction conditions to form a silyl ether in the presence of a catalytic amount of at least one photoactivated species of a transition metal carbonyl coordination compound precursor.
Claim 3
Dependent Claim
36 words
A process as defined in claim 1 wherein said photoactivated species are formed by irradiating said precursor with electromagnetic radiation comprising a plurality of wavelengths from a range of about 200 nanometers to about 850 nanometers.
Claim 4
Dependent Claim
13 words
A process as defined in claim 2 wherein said precursor is tetrairidium dodecacarbonyl.
Claim 5
Dependent Claim
13 words
A process as defined in claim 2 wherein said precursor is dirhenium decacarbonyl.
Claim 6
Dependent Claim
13 words
A process as defined in claim 2 wherein said precursor is tetracobalt dodecacarbonyl.
Claim 7
Dependent Claim
15 words
A process as defined in claim 2 wherein said precursor is triphenylphosphine cobalt tricarbonyl dimer.
Claim 8
Dependent Claim
13 words
A process as defined in claim 2 wherein said precursor is dicarbonylacetylacetonato iridium.
Claim 9
Dependent Claim
16 words
A process as defined in claim 2 wherein said precursor is triosmium dodecacarbonyl or triruthenium dodecacarbonyl.
Claim 10
Dependent Claim
18 words
A process as defined in claim 2 wherein said precursor is hexarhodium hexadecacarbonyl, chromium hexacarbonyl or dicobalt octacarbonyl.
Claim 11
Dependent Claim
25 words
A process as defined in claim 2 wherein said reaction conditions include a reaction environment that is substantially free of reaction inhibiting oxygen or water.
Claim 12
Dependent Claim
14 words
A process as defined in claim 2 wherein said carbonyl compound is a ketone.
Claim 13
Dependent Claim
13 words
A process as defined in claim 2 wherein said carbonyl compound is acetone.
Claim 14
Dependent Claim
34 words
A process as defined in claim 11 wherein said precursor is tetrairidium dodecacarbonyl, dirhenium decacarbonyl, tetracobalt dodecacarbonyl, triphenylphosphine cobalt tricarbonyl dimer, dicarbonylacetylacetonato iridium, triosmium dodecacarbonyl, triruthenium dodecacarbonyl, hexarhodium hexadecacarbonyl, chromium hexacarbonyl or dicobalt octacarbonyl.
Claim 15
Dependent Claim
14 words
A process as defined in claim 2 wherein said carbonyl compound is an aldehyde.
Claim 16
Dependent Claim
20 words
A process as defined in claim 14 wherein said precursor is dirhenium decacarbonyl, tetracobalt dodecacarbonyl or triphenylphosphine cobalt tricarbonyl dimer.
Claim 17
Dependent Claim
12 words
A process as defined in claim 15 wherein said aldehyde is n-butyraldehyde.
Claim 18
Dependent Claim
22 words
A process as defined in claim 11 wherein said precursor is tetrairidium dodecacarbonyl, dirhenium decacarbonyl, dicarbonylacetylacetonato iridium, triosmium dodecacarbonyl or triruthenium dodecacarbonyl.
Claim 19
Dependent Claim
12 words
A process as defined in claim 17 wherein said ketone is acetone.
Claim 20
Dependent Claim
13 words
A process as defined in claim 3 wherein said carbonyl compound is cycloheptanone.
Claim 21
Dependent Claim
17 words
A process as defined in claim 2 or 5 wherein a mixture of carbonyl compound is present.
Claim 22
Dependent Claim
15 words
A process as defined in claim 3 or 4 wherein said carbonyl compound is 2-heptanone.
Claim 23
Dependent Claim
37 words
A process as defined in claim 13, 15, 17 or 18 wherein said organosilicon hydride is of the formula H x SiR y where R is alkyl or aryl; x=1 or 2; y=2 or 3 and x+y=4.
Claim 24
Dependent Claim
19 words
A process as defined in claim 22 wherein said organosilicon hydride is HSi(CH 2 CH 3 ) 3 .
Claim 25
Dependent Claim
27 words
A process as defined in claim 10 wherein said reaction conditions include reacting at a temperature within the range of about 0° C. to about 50° C.
Claim 26
Dependent Claim
23 words
A process as defined in claim 1 wherein the transition metal of said precursor is iridium, rhenium, cobalt, ruthenium, rhodium, chromium or osmium.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-31 | 1985-11-30 | 1986-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-31 | 1989-11-30 | 1990-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-31 | 1993-11-30 | 1994-06-01 | $7700.00 | Window Closed / Lapsed |