RO95370B1 - Process for preparing alpha-halo-acetanilides - Google Patents
Process for preparing alpha-halo-acetanilidesInfo
- Publication number
- RO95370B1 RO95370B1 RO126094A RO12609486A RO95370B1 RO 95370 B1 RO95370 B1 RO 95370B1 RO 126094 A RO126094 A RO 126094A RO 12609486 A RO12609486 A RO 12609486A RO 95370 B1 RO95370 B1 RO 95370B1
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- RO
- Romania
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- index
- formula
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- description
- see formula
- Prior art date
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Inventia se refera la obtinerea unor produse erbicide de tip alfa-halo- acetanilide, cu formula generala I (vezi formula în pag.1 a descrierii), în care R indice 1, R indice 2 si R indice 3 reprezinta hidrogen, grupe alchil primare, secundare tertiare cu 1...4 atomi de carbon iar X reprezinta clor, brom, iod, prin tratarea anilinelor substituite, cu formula II (vezi formula în pag.1 a descrierii) au semnificatiile de mai sus, în care R indice 1, R indice 2 si R indice 3 cu halogenuri de haloacetil, cu formula III (vezi formula în pag.1 a descrierii), în care X este idem ca mai sus, în mediu de 1,1,1-triclor-etan (metilcloroform), solvent neinflamabil si neexploziv, cu sau fara adaos de gheata, la temperaturi de 0...25 degree C pîna la temperatura de reflux (74 degree C), în prezenta unui acceptor de acid, de tipul: carbonati, bicarbonati, hidroxizi ai metalelor alcaline, de exemplu: Na indice 2 CO indice 3, K indice 2 CO indice 3, NaOH, KOH etc. amine tertiare, de exemplu: trietil-amina, iar prelucrarea masei de reactie se face prin antrenarea cu vapori a 1,1,1-tricloretanului, în prezenta unui agent dispersant.The invention relates to the production of herbicidal products of the alpha-haloacetanilide type of the general formula I (see formula on page 1 of the description), wherein R index 1, R index 2 and R index 3 represent hydrogen, primary alkyl groups , secondary tertiary 1-4 carbon atoms and X represents chlorine, bromine, iodine, by treatment of the substituted anilines of the formula II (see formula on page 1 of the description) have the above meanings, wherein R index 1 , R index 2 and R index 3 with haloacetyl halides of formula III (see formula on page 1 of the description), wherein X is as above, in 1,1,1-trichloroethane (methyl chloroformate) ), non-flammable and non-explosive solvent, with or without the addition of ice, at temperatures of 0 ... 25 ° C to reflux (74 ° C) in the presence of an acid acceptor such as carbonates, bicarbonates, of alkali metals, for example: Na 2 CO index 3, K index 2 CO index 3, NaOH, KOH, etc. tertiary amines, for example triethylamine, and the processing of the reaction mass is carried out by vaporizing 1,1,1-trichloroethane in the presence of a dispersing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO126094A RO95370B1 (en) | 1986-12-24 | 1986-12-24 | Process for preparing alpha-halo-acetanilides |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO126094A RO95370B1 (en) | 1986-12-24 | 1986-12-24 | Process for preparing alpha-halo-acetanilides |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RO95370B1 true RO95370B1 (en) | 1988-10-01 |
Family
ID=40904733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO126094A RO95370B1 (en) | 1986-12-24 | 1986-12-24 | Process for preparing alpha-halo-acetanilides |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO95370B1 (en) |
-
1986
- 1986-12-24 RO RO126094A patent/RO95370B1/en unknown
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