US4257948A
Expired / Lapsed
US
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Novel epoxidation agent and process
Assignee: Sanofi Aventis France
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Filing: 1979-04-11
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Granted: 1981-03-24
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Expires: 1999-04-11
Abstract
Abstract A novel epoxidation agent comprising hydrogen peroxide and hexachloroacetone and a novel process for epoxidizing an acyclic, cyclic or polycyclic compound containing at least one ethylenic unsaturation.
Inventors
- 👤 Germain Costerousse
- 👤 Jean G. Teutsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:57
CPC Classifications
C; C07; C07J; C07J71/00; C07J71/0005; C07J71/001; C07D; C07D301/00; C07D301/02; C07D301/03; C07D301/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
8 words
An epoxidation agent comprising hydrogen peroxide and hexachloroacetone.
Claim 2
Dependent Claim
8 words
An epoxidation agent comprising hydrogen peroxide and hexachloroacetone.
Claim 3
Dependent Claim
11 words
The agent of claim 1 containing a catalytic amount of hexachloroacetone.
Claim 4
Dependent Claim
40 words
In the process of reacting an acrylic, cyclic or polycyclic compound containing at least one ethylenic unsaturation with an epoxidation agent to obtain the corresponding epoxidized compound, the improvement comprising using as the epoxidation agent the composition of claim 1.
Claim 5
Dependent Claim
22 words
The process of claim 3 wherein a steroid containing at least one ethylenic unsaturation is reacted to obtain the corresponding epoxy steroid.
Claim 6
Dependent Claim
37 words
The process of claim 4 wherein the steroid has a 3-ketal group and a Δ 5 (6) -double bond to obtain the corresponding 3-ketal-5,6-epoxy steroid as a mixture of 5α,6α-epoxy and 5β,6β-epoxy isomers which may be separated.
Claim 7
Dependent Claim
46 words
The process of claim 4 wherein the steroid has a 3-ketal group and double bonds on the Δ 5 (10) and Δ 9 (11) -positions to obtain the corresponding 3-ketal-5,10-epoxy-Δ 9 (11) -steroid as a mixture of the 5α,10α-epoxy and 5β,10β-epoxy isomers which may be separated.
Claim 8
Dependent Claim
45 words
The process of claim 4 wherein the steroid has a 3-alkoxy group and double bonds in the Δ 5 (10) and Δ 9 (11) -positions to obtain the corresponding 3-alkoxy-5,10-epoxy-Δ 9 (11) -steroid as a mixture of 5α,10α-epoxy and 5β,10β-epoxy isomers which may be separated.
Claim 9
Dependent Claim
18 words
The process of claim 3 wherein the reaction is effected at a temperature of -10° to 30° C.
Claim 10
Dependent Claim
13 words
The process of claim 8 wherein the temperature is -5° to +5° C.
Claim 11
Dependent Claim
15 words
The process of claim 3 wherein the reaction is effected in a chlorinated organic solvent.
Claim 12
Dependent Claim
16 words
The agent of claim 1 comprising hydrogen peroxide and 1 to 20 mole percent of hexachloroacetone.
Claim 13
Dependent Claim
23 words
The process of claim 3 wherein the agent contains 1 to 20 mole percent of hexachloroacetone based on the amount of hydrogen peroxide.
References Cited (Backward Citations)
FR2149428A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-23 | 1984-09-22 | 1985-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-23 | 1988-09-22 | 1989-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-23 | 1992-09-22 | 1993-03-24 | $7700.00 | Window Closed / Lapsed |