SU390068A1 - METHOD OF OBTAINING HALOIDBENZOIC ACIDS - Google Patents
METHOD OF OBTAINING HALOIDBENZOIC ACIDSInfo
- Publication number
- SU390068A1 SU390068A1 SU1356297A SU1356297A SU390068A1 SU 390068 A1 SU390068 A1 SU 390068A1 SU 1356297 A SU1356297 A SU 1356297A SU 1356297 A SU1356297 A SU 1356297A SU 390068 A1 SU390068 A1 SU 390068A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- acids
- haloidbenzoic
- obtaining
- conversion
- cobalt
- Prior art date
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
1one
Изобретение отиоситс к синтезу галоидбеизойных кислот, широко примен емых R производстве гербицидиых препаратов.The invention of othosit to the synthesis of halobic acid acids, which are widely used in the manufacture of herbicide preparations.
Известен способ получени полигалоидбеизойных путем окислени полигалоидтолуолов кислородом воз,духа при 130-1бО°С в присутст;вии стеарата кобальта и хлора. Но «звестный способ отличаетс низкой степенью конверсии галоидтолуолов и большим индукционным периодом реакции окислени . Как показывает , при о,кислении тригалоидтолуолов степень 1конверсии составл ет 30-40%, а индукционный период 4 час и более.A known method for producing polyhalogen by isoic acids by oxidizing polyhalo toluenes with oxygen from an ox, spirit at 130-1 ° C in the presence of cobalt and chlorine stearate. But the well-known method is characterized by a low degree of halo-toluene conversion and a long induction period of the oxidation reaction. As shown, with o, the trihalide toluene acidity, the degree of 1 conversion is 30–40%, and the induction period is 4 hours or more.
Предлагают способ получени галоидбензойных кислот окислением галоидтолуолов молекул рным кислородом в присутствии в качестве катализатора смеси стеаратов кобальта и марганца и в качестве инициатора бензальдегида и тетрабромэтана.A method is proposed for producing halobenzoic acids by oxidizing halo-toluene with molecular oxygen in the presence of a mixture of cobalt and manganese stearates and a benzaldehyde initiator and tetrabromoethane as a catalyst.
Предлагаемый способ осуществл ют при температуре 140-180°С в среде органического растворител , например алифатических карбоновых кислот.The proposed method is carried out at a temperature of 140-180 ° C in an environment of an organic solvent, for example aliphatic carboxylic acids.
Предлагаемый способ позвол ет повысить степень конверсии галоидтолуолов До 90-95% за од-ив проход сырь , ,прн этом .ин-дукЦйоинь1Й период практически отсутствует.The proposed method allows to increase the degree of conversion of halo-toluene. Up to 90-95% in one pass of the raw material, however, this .in-ducCyoin period is almost absent.
Пример i. К 3 кг 2, 3, 6-трихлортолуола при температуре 150°С добавл ют по 3 г стеаратов кобальта и марганца, 60 г бепзальдегида , 60 г тетрабромэтана и пропускают молекул рный кислород со скоростью 200 л1час в течение 6 час. Конверси 2. 3, 6-трихлортолуола 95%.Example i. To 3 kg of 2, 3, 6-trichlorotoluene at a temperature of 150 ° C, 3 g of cobalt and manganese stearates, 60 g of bepsaldehyde, 60 g of tetrabromoethane are added and molecular oxygen is passed at a rate of 200 l1h for 6 hours. Conversion 2. 3, 6-trichlorotoluene 95%.
П р и м ер 2. К 25 г З-бром-4-хлортолуола и 25 г н-мас.л ной кислоты добавл ют по 0,05 г :теаратов кобальта и .марганца, 2 г тетрабромметана и пропускают молекул рный кислород со скоростью 30 л/шс в течение 10 час при температуре 140°С. Конверси З-бром-4-хлортолуола 90%.Example 2: To 25 g of 3-bromo-4-chlorotoluene and 25 g of n-wt. Acid each is added 0.05 g: tearats of cobalt and manganese, 2 g of tetrabromomethane and molecular oxygen is passed through speed of 30 l / shs for 10 hours at a temperature of 140 ° C. Conversion of 3-bromo-4-chlorotoluene 90%.
Предмет изобретени Subject invention
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1356297A SU390068A1 (en) | 1969-08-04 | 1969-08-04 | METHOD OF OBTAINING HALOIDBENZOIC ACIDS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1356297A SU390068A1 (en) | 1969-08-04 | 1969-08-04 | METHOD OF OBTAINING HALOIDBENZOIC ACIDS |
Publications (1)
Publication Number | Publication Date |
---|---|
SU390068A1 true SU390068A1 (en) | 1973-07-11 |
Family
ID=20447072
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1356297A SU390068A1 (en) | 1969-08-04 | 1969-08-04 | METHOD OF OBTAINING HALOIDBENZOIC ACIDS |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU390068A1 (en) |
-
1969
- 1969-08-04 SU SU1356297A patent/SU390068A1/en active
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