IL28906A - Process for the preparation of alkyl 4,4'-dichlorobenzilates - Google Patents
Process for the preparation of alkyl 4,4'-dichlorobenzilatesInfo
- Publication number
- IL28906A IL28906A IL2890667A IL2890667A IL28906A IL 28906 A IL28906 A IL 28906A IL 2890667 A IL2890667 A IL 2890667A IL 2890667 A IL2890667 A IL 2890667A IL 28906 A IL28906 A IL 28906A
- Authority
- IL
- Israel
- Prior art keywords
- alkyl
- preparation
- reaction
- dichlorobenzilates
- ethyl
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 10
- 238000002360 preparation method Methods 0.000 title description 6
- -1 alkyl 4,4'-dichlorobenzilates Chemical class 0.000 title description 2
- 239000003054 catalyst Substances 0.000 claims description 3
- 230000003197 catalytic effect Effects 0.000 claims description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 6
- 125000000217 alkyl group Chemical group 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C59/00—Compounds having carboxyl groups bound to acyclic carbon atoms and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
- C07C59/40—Unsaturated compounds
- C07C59/42—Unsaturated compounds containing hydroxy or O-metal groups
- C07C59/56—Unsaturated compounds containing hydroxy or O-metal groups containing halogen
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
A PROCESS POR THE PREPARATION OP ALKYL 7 The present invention relates to a new process for the preparation pf Alk l are known agents for destroying vermin and in particular they are utilized as The process utilised up to now for the preparation of these alkyl have not been found to be Usually they require several steps of reaction which makes them cumbersome and reduces the the products obtained are not always very according to a method described in the literature and Helvetica ethyl is prepared by the following steps DDT is chlorinated to give which is then hydrolysed to the latter is rearranged to acid which in turn is esterified with ethanol to give the final It is thus the object of the present invention to develop a process for the preparation of alkyl which does not require many can be easily gives good yields and produces pure The present invention consists therefore in a process for the preparation of alkyl which comprises oxidising the corresponding alkyl acetate with oxygen in the presence of a catalytic amount of a ammonium hydroxide of the formula i 2a which stands for an in a solvent selected among the group consisting of its alkyl homologues and dialkyl The reaction is preferably performed at temperatures which are below or about room Especially suitable are temperatures of to about C temperatures are indicated herein in degrees suitable catalysts mentioned for for diaetby the be with the starting new their is by i following equation a for ally 1 and the invent will now be by the following w being by g ethyl in 120 stirred in atmosphere at To this solution in of about 1 1 of ft solution of 1 of oxygen stirring terminated the distilled off hydrochloric acid and Finally the distilled the beginning at ordinary at There were g of ethyl 2 The procedure described in waa repeated tuting the pyridine by of the residue after the been distilled off at reduced washed with water and dried reduced there ned g of The reaction was performed described in 1 utilising as solvent 120 of to yield g of the 4 reaction performed in utilising at of a aqueous solution of g ethyl The reaction was as described in utilising catalyst 2 ml of an ethanolic solution of g of ethyl The reaction performed as described in 1 sing as 2 ml an solution of Yield of ethyl reaction X utilising of g of reaction as t field g of hyl described the it the solvent filtered washed water field the described ia 1 as of of insufficientOCRQuality
Claims (1)
1. Nov nature our ia is to bo that process of ia a catalytic a in for ia selected group A to about or A to the is perforated at to A to aay of to taa catalyst is of aad to ay of 1 to the nt or A accord to aay 1 to is selected of A g to aay of 1 to tho ioa vith A process for of to by tsam SOB insufficientOCRQuality
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL2890667A IL28906A (en) | 1967-11-07 | 1967-11-07 | Process for the preparation of alkyl 4,4'-dichlorobenzilates |
| CH1657368A CH496646A (en) | 1967-11-07 | 1968-11-06 | Acaricidal 4,4'-dichlorobenzilic acid and its - opt substd alkyl esters |
| FR1590924D FR1590924A (en) | 1967-11-07 | 1968-11-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL2890667A IL28906A (en) | 1967-11-07 | 1967-11-07 | Process for the preparation of alkyl 4,4'-dichlorobenzilates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IL28906A true IL28906A (en) | 1971-06-23 |
Family
ID=11044288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL2890667A IL28906A (en) | 1967-11-07 | 1967-11-07 | Process for the preparation of alkyl 4,4'-dichlorobenzilates |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH496646A (en) |
| FR (1) | FR1590924A (en) |
| IL (1) | IL28906A (en) |
-
1967
- 1967-11-07 IL IL2890667A patent/IL28906A/en unknown
-
1968
- 1968-11-06 CH CH1657368A patent/CH496646A/en not_active IP Right Cessation
- 1968-11-07 FR FR1590924D patent/FR1590924A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH496646A (en) | 1970-09-30 |
| FR1590924A (en) | 1970-04-20 |
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