Claims
- 1. A method for preparing enolic monoether or diether of adipic dialdehyde which method comprises the step of heating to a temperature between about 150.degree. and 450.degree. C and in the presence of an inert and thermally stable solvent for a Cope rearrangement a monoether or diether of the formulas ##EQU8## or ##EQU9## respectively, wherein each R is a hydrogen atom, an alkyl of 1 to 4 carbon atoms, phenyl, or phenyl having substituted therein an alkyl of 1 to 4 carbon atoms, a halogen, hydroxyl, methoxy, ethoxy, carboxy, carbomethoxy, carboethoxy, or methylol substituent, and each R' is an alkyl of 1 to 4 carbon atoms or a halogen, hydroxy, or cyano mono-substituted alkyl of 1 to 4 carbon atoms, and recovering the corresponding enolic monoether or diether of adipic aldehyde of the formulas ##EQU10## or ##EQU11## respectively.
- 2. A method according to claim 1 wherein the Cope transformation is carried out in the presence of a polymerization inhibitor.
- 3. A method for preparing enolic monoether or diether of adipic dialdehyde which method comprises the step of heating to a temperature between about 150.degree. and 450.degree. C and in the vapor phase for a Cope rearrangement a monoether or diether of the formulas ##EQU12## or ##EQU13## respectively, wherein each R is a hydrogen atom, an alkyl radical of 1 to 4 carbon atoms, phenyl, or phenyl having substituted therein an alkyl of 1 to 4 carbon atoms, a halogen, hydroxyl, methoxy, ethoxy, carboxy, carbomethoxy, carbomethoxy, carboethoxy, or methylol substituent; and each R' is an alkyl of 1 to 4 carbon atoms or a halogen, hydroxy, or cyano monosubstituted alkyl of 1 to 4 carbon atoms, and recovering the corresponding enolic monoether of diether of adipic aldehyde of the formulas ##EQU14## or ##EQU15## respectively.
- 4. A method according to claim 3 wherein the Cope rearrangement is carried out in the presence of an inert gas.
CROSS REFERENCE TO RELATED APPLICATION
This application is a continuation of U.S. Pat. application Ser. No. 711,842, filed Mar. 11, 1968, now abandoned, which is in turn a continuation-in-part of application, Ser. No. 702,524, filed Feb. 2, l968, now U.S. Pat. No. 3,787,484.
Foreign Referenced Citations (1)
Number |
Date |
Country |
1,205,618 |
Sep 1970 |
UK |
Non-Patent Literature Citations (3)
Entry |
Berson et al., "J.A.C.S.," Vol. 86, pp. 5019-5020 (1964). |
Viola et al., "J.A.C.S.," Vol. 87, pp. 1150 & 1151 (1965). |
Chuche et al., C. R. Acad. Sci., Paris, Tome 262, pp. 567-570 (1966). |
Continuations (1)
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Number |
Date |
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Parent |
711842 |
Mar 1968 |
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Continuation in Parts (1)
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Number |
Date |
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702524 |
Feb 1968 |
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