SU390068A1 - METHOD OF OBTAINING HALOIDBENZOIC ACIDS - Google Patents

METHOD OF OBTAINING HALOIDBENZOIC ACIDS

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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
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SU
USSR - Soviet Union
Prior art keywords
acids
haloidbenzoic
obtaining
conversion
cobalt
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Application number
SU1356297A
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Russian (ru)
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Publication date
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Priority to SU1356297A priority Critical patent/SU390068A1/en
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Publication of SU390068A1 publication Critical patent/SU390068A1/en

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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)

1.Способ получени  галоидбензойных кнслот путем окислени  галоидтолуолов молекул рным кислородом в присутствии катализатора и инициатора при повышенной температуре, отличающийс  тем, что, с целью сокращени  индукционного периода и увеличени  степени конверсии, в качестве, катализатора используют смесь стеаратов кобальта и марганца, а в1. A method for producing halobenzoic acids by oxidizing halo-toluene with molecular oxygen in the presence of a catalyst and initiator at elevated temperature, characterized in that, to reduce the induction period and increase the degree of conversion, cobalt and manganese stearates are used as catalyst. качестве Инициатора используют бензальдегид Н тетрабромэтан.as the initiator, benzaldehyde H tetrabromoethane is used. 2.Способ по п. 1, отличающийс  тем, что процесс ведут при температуре 140-180°С.2. A method according to claim 1, characterized in that the process is carried out at a temperature of 140-180 ° C.
SU1356297A 1969-08-04 1969-08-04 METHOD OF OBTAINING HALOIDBENZOIC ACIDS SU390068A1 (en)

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

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SU1356297A SU390068A1 (en) 1969-08-04 1969-08-04 METHOD OF OBTAINING HALOIDBENZOIC ACIDS

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SU (1) SU390068A1 (en)

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