SU534447A1 - The method of obtaining 2- (4-tert.butylbenzoyl) benzoic acid - Google Patents
The method of obtaining 2- (4-tert.butylbenzoyl) benzoic acidInfo
- Publication number
- SU534447A1 SU534447A1 SU2116961A SU2116961A SU534447A1 SU 534447 A1 SU534447 A1 SU 534447A1 SU 2116961 A SU2116961 A SU 2116961A SU 2116961 A SU2116961 A SU 2116961A SU 534447 A1 SU534447 A1 SU 534447A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- tert
- butylbenzoyl
- benzoic acid
- obtaining
- chlorobenzene
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
1one
Изобретение относитс к способу получени 2- (4-трер-бутилбензоил)-бензойной кислоты, используемой в синтезе 2-трет -бутилантрахинона .This invention relates to a process for the preparation of 2- (4-trere-butylbenzoyl) benzoic acid used in the synthesis of 2-tert-butyl anthraquinone.
Известен способ получени 2-(4-Tpeiv -бутилбензоил)-бензойной кислоты взаимодействием трет-бутилбензола с фталевым ангидридом в присутствии безводного хлористого алюмини и хлорбензола при 25-50 С с последуюишм разложением алюминиевого комплекса и выделением целевого продукта;.A known method for producing 2- (4-Tpeiv-butylbenzoyl) benzoic acid by reacting tert-butylbenzene with phthalic anhydride in the presence of anhydrous aluminum chloride and chlorobenzene at 25-50 ° C, followed by decomposition of the aluminum complex and isolation of the desired product ;.
Однако известный способ длителен, тру- доемок и сложен.However, the known method is long, laborious and complicated.
С целью сокращени продолжительности и упрощени процесса предлагаетс последНИИ вести в течение 0,5-2,0 час с последующим разложением алюминиевого комплекса 2О-24%-ной сол ной кислотой при 9О-110°С, отделением органического сло ,и его охлаждением дл кристаллизации цепе вого продукта.In order to shorten the duration and simplify the process, it is proposed to maintain the last for 0.5-2.0 hours, followed by decomposition of the aluminum complex 2 O-24% hydrochloric acid at 9 O-110 ° C, separating the organic layer, and cooling it to crystallize chain product.
Процесс целесообразно вести при мопь ном отношении трег-бутилбензол-фталевый ангидрид:хлористый ал1бминий:хлорбенаол 2,2:l}2-3:3-4 и температуре 30-40°С. It is expedient to conduct the process with a tri-butylbenzene-phthalic anhydride: aluminum chloride: chlorobenol 2.2: l} 2-3: 3-4 and a temperature of 30-40 ° C.
Выход целевого продукта с т.пл. 152,5154°С достигает 79%.The yield of the target product with so pl. 152.5154 ° С reaches 79%.
Пример 1. К смеси 122,1 г (0,90 1 -моль) тpe -бyтилбeнзoлa, 60,6 г (0,408 г-моль) фталевого ангидрида и 150 мл (1,48 ) хлорбензола присыпают порци ми при ЗО-4О С и размешивани 111,6 г (0,84 г-моль) хлористого алюмини , размешивают 1 час при 30 С, в течение 10 мин при размешивании выливают на 26О мл 24%-ной сол ной кислоты; наблюда повышение температуры до 110 С. По окончании разложени мещалку останавливают на 3-5 мин, декантируют хорошо отделгпощийс органический слой, охлаждают его до 5 С, отфильтровывают осадок, промывают охлажденным хлорбензолом и сушат на воздухе в сушильном шкафу при 12О С, Выход 90,2 г (79%), т. пл. 152,5-153°С.Example 1. To a mixture of 122.1 g (0.90 1-mole) of ter-butylbenzol, 60.6 g (0.408 g-mol) of phthalic anhydride and 150 ml (1.48) of chlorobenzene are powdered in portions at 30 ° C and stirring 111.6 g (0.84 g-mol) of aluminum chloride, stir for 1 hour at 30 ° C, for 10 minutes while stirring, poured onto 26O ml of 24% hydrochloric acid; the temperature increased to 110 ° C. At the end of the decomposition, the blender was stopped for 3-5 minutes, the well separated organic layer was decanted, cooled to 5 ° C, the precipitate was filtered off, washed with cooled chlorobenzene and dried in air in an oven at 12 ° C, Exit 90, 2 g (79%), so pl. 152.5-153 ° C.
Пример 2. К смеси 65,8 г (0,49 г-моль) трет-бутилбензола ,6О,6 г фталевого ангидрида и 15О мл хлорбензола присыпают порци ми при 30-4 О С и размешивании 111,6 г хлористого алюмини размешивают 1 час при ЗО-40 С, в течеExample 2. To a mixture of 65.8 g (0.49 g-mol) of tert-butylbenzene, 6O, 6 g of phthalic anhydride and 15O ml of chlorobenzene are powdered in portions at 30-4 ° C and stirring 111.6 g of aluminum chloride is stirred 1 hour at ZO-40 С, during
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2116961A SU534447A1 (en) | 1975-03-27 | 1975-03-27 | The method of obtaining 2- (4-tert.butylbenzoyl) benzoic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2116961A SU534447A1 (en) | 1975-03-27 | 1975-03-27 | The method of obtaining 2- (4-tert.butylbenzoyl) benzoic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU534447A1 true SU534447A1 (en) | 1976-11-05 |
Family
ID=20613813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU2116961A SU534447A1 (en) | 1975-03-27 | 1975-03-27 | The method of obtaining 2- (4-tert.butylbenzoyl) benzoic acid |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU534447A1 (en) |
-
1975
- 1975-03-27 SU SU2116961A patent/SU534447A1/en active
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