US3856833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the production of aldehydic acids
Assignee: SNIA Viscosa SpA
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Filing: 1972-02-17
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Granted: 1974-12-24
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Expires: 1992-02-17
Abstract
Abstract A method is disclosed which permits obtaining bifunctional chemical compounds, such as acidic aldehydes from ozonides of olefins, the improvement consisting in that the peroxidic derivatives of the ozonides in question are subjected to transposition in a polar solvent and in the presence of a catalyst. The catalyst is preferably a basic substance such as an alkali metal salt or an alkali metal alcoholate, or also an organic base. The catalytic system may also comprise an organic acid anhydride, provided that it is soluble in the polar solvent aforesaid but cannot react therewith.
Inventors
- 👤 F Siclari
- 👤 P Rossi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:47
CPC Classifications
C; C07; C07D; C07D323/00; C07D323/02; C07C; C07C227/00; C07C227/04; C07C227/06; C07C227/08; C07C45/00; C07C45/40; C07C51/00; C07C51/34
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
95 words
A METHOD FOR THE PRODUCTION OF HIGH YIELDS OF AN ACIDIC ALDEHYDE COMPRISING SUBJECTING THE PEROXIDE DERIVATIVE OF THE OZONIDE OF A CYCLO-OLEFIN TO TRANSPOSITION IN A POLAR SOLVENT SELECTED FROM THE GROUP CONSISTING OF LOWER ALKANOLS AND CARBOXYLIC ACIDS BY ADDING TO THE STARTING SOLUTION CONSISTING OF SAID DERIVATIVE IN SAID SOLVENT A CATALYTIC SYSTEM WHICH IS SOLUBLE IN SAID SOLVENT AND COMPRISES AN ANHYDRIDE OF AN ORGANIC ACID, NON-REACTIVE WITH CARBOXYLIC ACID AND A BASIC SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL SALTS, ALCOHOLATES OF AN ALKALI METAL, AND ORGANIC BASES.
Claim 2
Independent Claim
95 words
A METHOD FOR THE PRODUCTION OF HIGH YIELDS OF AN ACIDIC ALDEHYDE COMPRISING SUBJECTING THE PEROXIDE DERIVATIVE OF THE OZONIDE OF A CYCLO-OLEFIN TO TRANSPOSITION IN A POLAR SOLVENT SELECTED FROM THE GROUP CONSISTING OF LOWER ALKANOLS AND CARBOXYLIC ACIDS BY ADDING TO THE STARTING SOLUTION CONSISTING OF SAID DERIVATIVE IN SAID SOLVENT A CATALYTIC SYSTEM WHICH IS SOLUBLE IN SAID SOLVENT AND COMPRISES AN ANHYDRIDE OF AN ORGANIC ACID, NON-REACTIVE WITH CARBOXYLIC ACID AND A BASIC SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL SALTS, ALCOHOLATES OF AN ALKALI METAL, AND ORGANIC BASES.
Claim 3
Dependent Claim
16 words
The method of claim 1, wherein the basic substance is a salt of an alkali metal.
Claim 4
Dependent Claim
52 words
A method according to claim 2, wherein the alkali metal salt is a salt of an aliphatic organic acid, selected from the group consisting of sodium acetate, potassium acetate, sodium formate, potassium formate, lithium formate, sodium propionate, potassium propionate, sodium stearate, potassium stearate, and an alkali metal salt of an aromatic acid.
Claim 5
Dependent Claim
25 words
A method according to claim 3, wherein the basic substance is an amine selected from the group consisting of trimethylamine, triethylamine and quaternary ammonium derivatives.
Claim 6
Dependent Claim
24 words
A method according to claim 1, wherein the basic substance is a cyclic nitrogenous base selected from the group consisting of pyridine and quinoline.
Claim 7
Dependent Claim
27 words
The method of claim 1, wherein the polar solvent is a carboxylic acid, and the anhydride of the organic acid is the anhydride of said carboxylic acid.
Claim 8
Dependent Claim
17 words
The method of claim 1, wherein the transposition is carriEd out at a temperature between 10*and 70*C.
Claim 9
Dependent Claim
16 words
A method according to claim 7, wherein the transposition is carried out at a constant temperature.
Claim 10
Dependent Claim
17 words
A method according to claim 7, wherein the transposition is carried out at an ever increasing temperature.
Claim 11
Dependent Claim
50 words
A method according to claim 2, wherein the ozonide is prepared for the transposition process in a mixture comprising the solution of the ozonide derivative in said polar solvent and said anhydride of the organic acid, said process being primed by the addition of the salt of an alkali metal.
Claim 12
Dependent Claim
24 words
A method according to claim 1, wherein the polar solvent is selected from the group consisting of low molecular weight alcohols, and carboxylic acids.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |