JPS5718644A - Preparatin of benzaldehydes - Google Patents
Preparatin of benzaldehydesInfo
- Publication number
- JPS5718644A JPS5718644A JP9436680A JP9436680A JPS5718644A JP S5718644 A JPS5718644 A JP S5718644A JP 9436680 A JP9436680 A JP 9436680A JP 9436680 A JP9436680 A JP 9436680A JP S5718644 A JPS5718644 A JP S5718644A
- Authority
- JP
- Japan
- Prior art keywords
- compound
- chlorinated
- toluene
- separating
- benzaldehyde
- 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.)
- Granted
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To prepare the titled compound in two steps, with high yield, by chlorinating toluene which may have halogen, CN or NO2 substituent group at the nucleus, and then reacting the resulted chlorinated toluene mixture having specific number of chlorine at the methyl group with nitric acid without separating from the reaction mixture.
CONSTITUTION: The methyl group of the compound of formula I (X is H, Cl, Br, CN or NO2) is chlorinated to obtain a chlorinated compound having 1.0W2.0 chlorine atoms in average, and the chlorinated compound is made to react with nitric acid to afford the benzaldehyde compound of formula II. By defining the degree of chlorination of the toluene compound within a specific range, the chlorinated toluene mixture obtained can be used as the raw material of the subsequent oxidation reaction without separating from the reaction mixture. Accordingly, the process can solve the problems of raw materials procurement which are inevitble probelms in the conventional preparation of benzaldehyde from benzal chloride or benzyl chloride.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9436680A JPS5718644A (en) | 1980-07-10 | 1980-07-10 | Preparatin of benzaldehydes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9436680A JPS5718644A (en) | 1980-07-10 | 1980-07-10 | Preparatin of benzaldehydes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5718644A true JPS5718644A (en) | 1982-01-30 |
| JPS6314693B2 JPS6314693B2 (en) | 1988-04-01 |
Family
ID=14108306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9436680A Granted JPS5718644A (en) | 1980-07-10 | 1980-07-10 | Preparatin of benzaldehydes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5718644A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103274929A (en) * | 2013-04-09 | 2013-09-04 | 金凯(辽宁)化工有限公司 | Preparation method of 2-trifluoromethyl benzoic acid |
| CN104447250A (en) * | 2014-12-24 | 2015-03-25 | 常熟市新华化工有限公司 | Method for synthesizing p-chlorobenzaldehyde from p-chlorotoluene |
-
1980
- 1980-07-10 JP JP9436680A patent/JPS5718644A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103274929A (en) * | 2013-04-09 | 2013-09-04 | 金凯(辽宁)化工有限公司 | Preparation method of 2-trifluoromethyl benzoic acid |
| CN103274929B (en) * | 2013-04-09 | 2014-12-17 | 金凯(辽宁)化工有限公司 | Preparation method of 2-trifluoromethyl benzoic acid |
| CN104447250A (en) * | 2014-12-24 | 2015-03-25 | 常熟市新华化工有限公司 | Method for synthesizing p-chlorobenzaldehyde from p-chlorotoluene |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6314693B2 (en) | 1988-04-01 |
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