Claims
- 1. A process for preparing monoethers of dihydroxybenzenes which comprises reacting an alkenylphenol having the formula ##STR3## wherein R and R.sup.1 are independently H or lower alkyl or where R and R.sup.1 together comprise --CH.sub.2 --.sub.X where X is 3, 4, 5, or 6, in the presence of a polar solvent with a substituted aliphatic alkylating agent containing up to about 10 carbon atoms and at a temperature of from 0.degree. To 200.degree. C. and thereafter oxidizing with hydrogen peroxide or an alkyl hydroperoxide in the presence of a strong acid catalyst at a temperature of from 25.degree. to 100.degree. C.
- 2. Process of claim 1 wherein the alkenylphenol is isopropenylphenol.
- 3. Process of claim 2 wherein the alkylating agent is a 2-chloropropionic acid or ester, a chloroacetic acid or ester of chloroacetonitrile.
- 4. Process of claim 3 wherein the ester is the methyl ester or the 2-ethoxyethyl ester.
- 5. Process of claim 3 wherein the solvent for the alkylation reaction is dimethylformamide, acetonitrile, dimethylsulfoxide, acetone or methanol.
- 6. Process of claim 1 wherein the alkylation reaction is carried out in the presence of a base.
- 7. Process of claim 6 wherein the base is potassium carbonate, sodium carbonate, sodium hydroxide or potassium hydroxide.
- 8. Process of claim 1 wherein the oxidation reaction is carried out in a reaction medium.
- 9. Process of claim 8 wherein the reaction medium for the oxidation reaction is acetic acid, methanol or acetone.
- 10. Process of claim 9 wherein the acid catalyst is sulfuric or phosphoric acid.
- 11. Process of claim 8 wherein the oxidation is caused by hydrogen peroxide.
REFERENCE TO COPENDING APPLICATION
This application is a continuation-in-part of Ser. No. 507,448 filed June 24, 1983 and now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4328361 |
Dai |
May 1982 |
|
Foreign Referenced Citations (4)
Number |
Date |
Country |
55-127331 |
Oct 1980 |
JPX |
55-127332 |
Oct 1980 |
JPX |
55-127333 |
Oct 1980 |
JPX |
55-127334 |
Oct 1980 |
JPX |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
507448 |
Jun 1983 |
|