JPS55127332A - Preparation of 4-substituted-isopropenylbenzene - Google Patents
Preparation of 4-substituted-isopropenylbenzeneInfo
- Publication number
- JPS55127332A JPS55127332A JP3531779A JP3531779A JPS55127332A JP S55127332 A JPS55127332 A JP S55127332A JP 3531779 A JP3531779 A JP 3531779A JP 3531779 A JP3531779 A JP 3531779A JP S55127332 A JPS55127332 A JP S55127332A
- Authority
- JP
- Japan
- Prior art keywords
- formula
- substituted
- oxyphenyl
- pent
- ene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To obtain the title compound which is a raw material for the synthesis of a substituted phenol useful as a raw material for various organic syntheses, in high yield and in high purity, by the thermal decomposition of 4-methyl-2,4-bis(p- substituted-oxyphenyl)pent-1-ene.
CONSTITUTION: The desired compound of formula IV is obtained by the thermal decomposition of 4-methyl-2,4-bis(p-substituted-oxyphenyl)pent-1-ene of formula I[R is formula II (X1 is H, CF3, halogen, cyano, etc.; X2 is H, halogen, cyano or lower alkyl), formula III, etc.] at 180W320°C, preferably 200W290°C. The gas formed by the decomposition is preferably separated from the raw materials and cooled as quickly as possible by using an alumina-packed column to increase the heating area or by absorbing the solvent under low pressure. Substituted phenols can be obtained in high purity and high yield by the reaction of the compound of formula IV with peroxide in the presence of an acid catalyst.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3531779A JPS55127332A (en) | 1979-03-26 | 1979-03-26 | Preparation of 4-substituted-isopropenylbenzene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3531779A JPS55127332A (en) | 1979-03-26 | 1979-03-26 | Preparation of 4-substituted-isopropenylbenzene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55127332A true JPS55127332A (en) | 1980-10-02 |
Family
ID=12438421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3531779A Pending JPS55127332A (en) | 1979-03-26 | 1979-03-26 | Preparation of 4-substituted-isopropenylbenzene |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55127332A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0129851A2 (en) * | 1983-06-24 | 1985-01-02 | The Dow Chemical Company | Preparation of monoalkylated dihydroxybenzenes and novel compounds prepared thereby |
| US4568497A (en) * | 1983-06-24 | 1986-02-04 | The Dow Chemical Company | Preparation of monoalkylated dihydroxybenzenes |
-
1979
- 1979-03-26 JP JP3531779A patent/JPS55127332A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0129851A2 (en) * | 1983-06-24 | 1985-01-02 | The Dow Chemical Company | Preparation of monoalkylated dihydroxybenzenes and novel compounds prepared thereby |
| US4511731A (en) * | 1983-06-24 | 1985-04-16 | The Dow Chemical Company | 2-Ethoxyethyl 2-(4-hydroxyphenoxy)-propanoate |
| US4568497A (en) * | 1983-06-24 | 1986-02-04 | The Dow Chemical Company | Preparation of monoalkylated dihydroxybenzenes |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Baciocchi et al. | Synthesis of 3-acyl and 3-carboalkoxyfurans by the ceric ammonium nitrate promoted addition of 1, 3-dicarbonyl compounds to vinylic acetates | |
| US4904814A (en) | Process for the preparation of tert-alkyl esters | |
| JPS55127332A (en) | Preparation of 4-substituted-isopropenylbenzene | |
| JPS55149294A (en) | Preparation of triphenylphosphine | |
| JPS55127334A (en) | Preparation of substituted phenols | |
| JPS55105663A (en) | Preparation of indoles | |
| JPS55127333A (en) | Preparation of substituted phenols | |
| JPS55104286A (en) | Preparation of thienoimidazoline compound | |
| JPS5679657A (en) | Novel preparation of polyisocyanate | |
| JPS5695132A (en) | Preparation of high purity styrene by dehydration of alpha-phenylethyl alcohol | |
| JPS5576881A (en) | Preparation of high-purity coproporphyrin 3 alkali salt | |
| JPS5659727A (en) | Preparation of substituted phenol | |
| JPS5692238A (en) | Separation and recovery of hydroquinone derivative | |
| JPS57106645A (en) | Preparation of 4-bromo-3-methylchrotonic acid ester | |
| JPS55102521A (en) | Improved method for preparation of styrene | |
| JPS55127331A (en) | Preparation of 4-methyl-2,4-bis(p-substituted-oxyphenyl) pent-1-ene | |
| JPS54154742A (en) | Preparation of diarylethane derivative | |
| JPS5758645A (en) | Preparation of carbonate | |
| JPS55111468A (en) | Preparation of n-benzyl-tetrahydro isoquinoline derivative | |
| JPS55129242A (en) | Preparation of alpha,alpha,alpha-trifluoro-o-toluoyl fluoride | |
| JPS5615266A (en) | Preparation of indole derivative | |
| JPS5490184A (en) | Preparation of 5-fluoro-orotic acid | |
| JPS552618A (en) | Improved preparation of diphenylamine | |
| JPS55122792A (en) | Preparation of 9-eicosyl-9-phosphabicyclononane | |
| JPS55143925A (en) | Preparation of cyclopentenolone |