SU185932A1 - METHOD OF OBTAINING ETHERS OF BENZODIFURANTETRACARBONIC ACIDS - Google Patents
METHOD OF OBTAINING ETHERS OF BENZODIFURANTETRACARBONIC ACIDSInfo
- Publication number
- SU185932A1 SU185932A1 SU1030881A SU1030881A SU185932A1 SU 185932 A1 SU185932 A1 SU 185932A1 SU 1030881 A SU1030881 A SU 1030881A SU 1030881 A SU1030881 A SU 1030881A SU 185932 A1 SU185932 A1 SU 185932A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- benzodifurantetracarbonic
- acids
- ethers
- obtaining
- obtaining ethers
- Prior art date
Links
- 239000002253 acid Substances 0.000 title description 2
- 150000007513 acids Chemical class 0.000 title 1
- 150000002170 ethers Chemical class 0.000 title 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- JIAARYAFYJHUJI-UHFFFAOYSA-L Zinc chloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 235000005074 zinc chloride Nutrition 0.000 description 3
- 239000011592 zinc chloride Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-Benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 1
- OXTNCQMOKLOUAM-UHFFFAOYSA-N Acetonedicarboxylic acid Chemical class OC(=O)CC(=O)CC(O)=O OXTNCQMOKLOUAM-UHFFFAOYSA-N 0.000 description 1
- TXHIDIHEXDFONW-UHFFFAOYSA-N benzene;propan-2-one Chemical compound CC(C)=O.C1=CC=CC=C1 TXHIDIHEXDFONW-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- ZSANYRMTSBBUCA-UHFFFAOYSA-N diethyl 3-oxopentanedioate Chemical compound CCOC(=O)CC(=O)CC(=O)OCC ZSANYRMTSBBUCA-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Description
Предлагаемый способ получени эфиров бензодифурантетракарбоновых кислот состоит в том, что п-бензохинон подвергают взаимодействию с эфирами ацетондикарбоновой кислоты в присутствии катализаторов, например хлористого цинка, при нагревании до 100- 120 С в среде органического растворител .The proposed method for preparing benzodifurantetracarboxylic acid esters is that p-benzoquinone is reacted with acetone dicarboxylic esters in the presence of catalysts, for example zinc chloride, when heated to 100-120 ° C in an organic solvent.
Пример. В колбе экстрактора раствор ют при нагревании 7 г хлористого цинка в 8 жл абсолютного спирта. К раствору прибавл ют 20,2 г (0,1 моль диэтилового эфира ацетондикарбоновой кислоты в 10 лл абсолютного эфира . В патрон экстрактора помещают 5,4 г пбензохинона . Экстракцию /г-бензохинона провод т при ПО-120° С в течение 27 час. Выпавшие после охлаждени кристаллы отфильтровывают , промывают эфиром, сушат. Выход 3,5 г (30%), т. пл. 151-152° С (из смеси бензол-ацетон 4:1).Example. In the flask of the extractor, 7 g of zinc chloride in 8 l of absolute alcohol are dissolved by heating. To the solution was added 20.2 g (0.1 mol of acetone dicarboxylic acid diethyl ester in 10 liters of absolute ether. 5.4 g of pbenzoquinone was placed in the extractor cartridge. Extraction / g-benzoquinone was carried out at PO-120 ° C for 27 hours The crystals which precipitated after cooling were filtered off, washed with ether, and dried. The yield was 3.5 g (30%), mp 151-152 ° C (from a mixture of benzene-acetone 4: 1).
Найдено, %: С 60,81, 60,94; Н 5,60, 5,80. Со4П2бО1о. Вычислено, %,: С 60,80; П 5,53.Found,%: C 60.81, 60.94; H 5.60, 5.80. Co4P2BO1o. Calculated,%: C 60.80; P 5.53.
Предмет изобретени Subject invention
Способ получени эфиров бензодифурантетракарбоновых кислот, отличающийс тем, что «-бензохинон подвергают взаимодействию с эфирами ацетондикарбоновой кислоты в присутствии катализаторов, например хлористого цинка, при нагревании до 100-120° С в среде органического растворител .A method for producing benzodifurantetracarboxylic esters, characterized in that the β-benzoquinone is reacted with acetone dicarboxylic acid esters in the presence of catalysts, for example zinc chloride, when heated to 100-120 ° C in an organic solvent.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU185932A1 true SU185932A1 (en) |
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