DE234290C - - Google Patents
Info
- Publication number
- DE234290C DE234290C DENDAT234290D DE234290DA DE234290C DE 234290 C DE234290 C DE 234290C DE NDAT234290 D DENDAT234290 D DE NDAT234290D DE 234290D A DE234290D A DE 234290DA DE 234290 C DE234290 C DE 234290C
- Authority
- DE
- Germany
- Prior art keywords
- dichlorobenzotrichloride
- chlorine
- sulfochloride
- chloro
- toluene
- 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.)
- Active
Links
- KZSNBJMYJWDVTK-UHFFFAOYSA-N 2,4-dichloro-1-(trichloromethyl)benzene Chemical compound ClC1=CC=C(C(Cl)(Cl)Cl)C(Cl)=C1 KZSNBJMYJWDVTK-UHFFFAOYSA-N 0.000 claims description 5
- 229910052801 chlorine Inorganic materials 0.000 claims description 4
- 239000000460 chlorine Substances 0.000 claims description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- MFHPYLFZSCSNST-UHFFFAOYSA-N 1-chloro-2-(trichloromethyl)benzene Chemical compound ClC1=CC=CC=C1C(Cl)(Cl)Cl MFHPYLFZSCSNST-UHFFFAOYSA-N 0.000 description 1
- WPYMKLBDIGXBTP-UHFFFAOYSA-N Benzoic acid Chemical class OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/10—Preparation of halogenated hydrocarbons by replacement by halogens of hydrogen atoms
- C07C17/14—Preparation of halogenated hydrocarbons by replacement by halogens of hydrogen atoms in the side-chain of aromatic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
- M 234290 KLASSE 12 o. GRUPPE- M 234290 CLASS 12 or GROUP
Verfahren zur Darstellung von 2,4-Dichlorbenzotrichlorid.Process for the preparation of 2,4-dichlorobenzotrichloride.
Patentiert im Deutschen Reiche vom 27. März 1909 ab.Patented in the German Empire on March 27, 1909.
Läßt man auf 2-Chlor-i-toluol-4-sulfochlorid in der Wärme Chlor im Überschuß einwirken, so erhält man als Endprodukt nahezu einheitlich das 2, 4-Dichlorbenzotrichlorid. Das 2, 4-Dichlorbenzotrichlorid kann vielfache technische Anwendung finden; beim Verseifen nach den üblichen Methoden liefert es z. B. die 2, 4-D1-chlorbenzoesäure. Dieses bisher technisch nicht zugängliche Derivat der Benzoesäure, welches ein wertvolles Ausgangsmaterial für die Herstellung von Farbstoffen usw. bildet, ist auf diesem Wege außerordentlich leicht und billig ' zu erhalten.If 2-chloro-i-toluene-4-sulfochloride is allowed to act in excess of chlorine in the heat, in this way, 2,4-dichlorobenzotrichloride is almost uniformly obtained as the end product. The 2,4-dichlorobenzotrichloride can find multiple technical applications; when saponifying after the usual methods it delivers z. B. 2,4-D1-chlorobenzoic acid. So far technically not accessible derivative of benzoic acid, which is a valuable starting material for production of dyes, etc., is extremely easy and cheap in this way ' to obtain.
225 Teile 2-Chlor-i-toluol-4-sulfochlorid werden auf 150 ° erhitzt. Man leitet alsdann in die Flüssigkeit bei einer Temperatur von 150 j bis 200° so lange Chlor ein, bis eine merkliche Bildung von Salzsäure nicht mehr stattfindet. Nach dem Erkalten wird das Re-. aktionsprodukt im Vakuum destilliert und der bei einem Druck von 20 mm zwischen 155 und 1590 siedende Anteil gesondert aufgefangen. Dieser Anteil stellt nahezu reines 2, 4-Dichlorbenzotrichlorid, vermischt mit ganz geringen Mengen Dichlorbenzalchlorid, dar.225 parts of 2-chloro-i-toluene-4-sulfochloride are heated to 150 °. Chlorine is then passed into the liquid at a temperature of 150.degree. To 200.degree. C. until a noticeable formation of hydrochloric acid no longer takes place. After cooling down, the re-. Action product is distilled in vacuo and the portion boiling between 155 and 159 0 at a pressure of 20 mm is collected separately. This proportion represents almost pure 2,4-dichlorobenzotrichloride, mixed with very small amounts of dichlorobenzal chloride.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE234290C true DE234290C (en) |
Family
ID=494157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT234290D Active DE234290C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE234290C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3844917A (en) * | 1971-12-20 | 1974-10-29 | B Miller | Process for the preparation of ring-chlorinated alkylbenzenes |
-
0
- DE DENDAT234290D patent/DE234290C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3844917A (en) * | 1971-12-20 | 1974-10-29 | B Miller | Process for the preparation of ring-chlorinated alkylbenzenes |
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