SU123534A1 - Method for preparing 5,8-diketo-1,4,5,8,9,10-hexahydronaphthalene-1 carbinic acid - Google Patents
Method for preparing 5,8-diketo-1,4,5,8,9,10-hexahydronaphthalene-1 carbinic acidInfo
- Publication number
- SU123534A1 SU123534A1 SU619561A SU619561A SU123534A1 SU 123534 A1 SU123534 A1 SU 123534A1 SU 619561 A SU619561 A SU 619561A SU 619561 A SU619561 A SU 619561A SU 123534 A1 SU123534 A1 SU 123534A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- acid
- hexahydronaphthalene
- diketo
- preparing
- carbinic
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Изобретением вл етс способ получени о, 8-д1 кето-1, 4, 5, 8. 9, 10гексагидронафталин-1-карбоиовой кислоты путем реакции Дильса-Адлера между р-винплакриловой кислотой и /г-бензохинопом при примекенпи в качестве среды товарной лед ной yKcycuofi кислоты npi комнатной температуре. Полученна непосредствеиао из реакционного раствора 5,8-дикето-1, 4, 5. 8, 9, 10-гексагид)онафталин-1-карбонова кислота после фильтровани и промывки от маточного раствора имеет вид легкого пушистого вещества, почти белого цвета, со слабым желтоватым оттенком, с т. пл. 220-222° к поэтому не нуждаетс в очистке.The invention is a method of obtaining o, 8-d1 keto-1, 4, 5, 8. 9, 10 hexahydronaphthalene-1-carboxylic acid by the reaction of Diels-Adler between p-vinplacrylate acid and / g-benzoquinop with primerpen as a medium for ice Noah yKcycuofi acid npi room temperature. The resulting 5,8-diketo-1, 4, 5. 8, 9, 10-hexahyd) naphthalene-1-carboxylic acid directly from the reaction solution after filtration and washing from the mother liquor has the appearance of a light fluffy substance, almost white in color, with a weak a yellowish tinge with m. pl. 220-222 ° C therefore does not need to be cleaned.
Способ осуществл етс следующим образом. 1113 г р-винилакриловой , кислоты технической с т. пл. 70-72 (избыток 10%), 1113 г п-бензохинона чистого и 5, 5 л уксусной кислоты смешивают в скл нке с притертой пробкой и оставл ют сто ть при комнатной температуре н- течеченне 20-22 суток. Выделившийс осадок 5,8-дикето-1, 4, 5, 8, 9. 10-гексагидронафталин-1-карбоиовой кислоты отфильтровывают, промывают 2-3 раза уксусной кислотой и несколько раз эфиром. Вы.ход 1750 J.The method is carried out as follows. 1113 g of p-vinyl acrylic acid, technical acid with m. Pl. 70-72 (excess of 10%), 1113 g of p-benzoquinone pure and 5, 5 l of acetic acid are mixed in a flask with a ground stopper and left to stand at room temperature for 20-22 days. The precipitated 5,8-diketo-1, 4, 5, 8, 9. 10-hexahydronaphthalene-1-carboxylic acid is filtered, washed 2-3 times with acetic acid and several times with ether. You. Approach 1750 J.
Предмет изобретени Subject invention
Способ получени 5,8-дикето-1, 4, 5, 8. 9. Ш-гексагидронафталин-Ь карбоновой кислоты путем конденсации |3-винилакрнловой кислоты с п-бензохиноном, отличающийс тем, что, с целью повышени выхода продукта, конденсацию (З-винилакриловой кислоты с /г-беизох.люном провод т в среде уксусной кислоты при ко: нагной тел пературе.The method of producing 5,8-diketo-1, 4, 5, 8. 9. W-hexahydronaphthalene-b carboxylic acid by condensation of | 3-vinyl acrylic acid with p-benzoquinone, characterized in that, in order to increase the yield of the product, 3-Vinyl acrylic acid with β-free-dihydric acid is carried out in an acetic acid medium with a coagulant body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU619561A SU123534A1 (en) | 1959-02-12 | 1959-02-12 | Method for preparing 5,8-diketo-1,4,5,8,9,10-hexahydronaphthalene-1 carbinic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU619561A SU123534A1 (en) | 1959-02-12 | 1959-02-12 | Method for preparing 5,8-diketo-1,4,5,8,9,10-hexahydronaphthalene-1 carbinic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU123534A1 true SU123534A1 (en) | 1959-11-30 |
Family
ID=48395088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU619561A SU123534A1 (en) | 1959-02-12 | 1959-02-12 | Method for preparing 5,8-diketo-1,4,5,8,9,10-hexahydronaphthalene-1 carbinic acid |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU123534A1 (en) |
-
1959
- 1959-02-12 SU SU619561A patent/SU123534A1/en active
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