SU189418A1 - - Google Patents
Info
- Publication number
- SU189418A1 SU189418A1 SU1040387A SU1040387A SU189418A1 SU 189418 A1 SU189418 A1 SU 189418A1 SU 1040387 A SU1040387 A SU 1040387A SU 1040387 A SU1040387 A SU 1040387A SU 189418 A1 SU189418 A1 SU 189418A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- naphthoquinone
- mol
- minutes
- preparation
- acetic acid
- Prior art date
Links
- FRASJONUBLZVQX-UHFFFAOYSA-N 1,4-Naphthoquinone Chemical compound C1=CC=C2C(=O)C=CC(=O)C2=C1 FRASJONUBLZVQX-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L Zinc chloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Substances CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram 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
- -1 diethyl ester Chemical class 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
Description
СПОСОБ ПОЛУЧЕНИЯ ЭТИЛОВОГО ЭФИРА 3-КАРБОЭТ 5-ОКСИ-а-НАФТОФУРАН-2-УКСУСНОЙ КИСЛОТЫMETHOD OF OBTAINING ETHYL ETHER 3-CARBOET 5-OXY-a-NAFTOFURAN-2-ACETIC ACID
Изобретение относитс к получению не описанного в литературе соединени . Способ его получени показан на схеме.The invention relates to the preparation of a compound not described in the literature. The method of its preparation is shown in the diagram.
CH--COORCH - COOR
1н-ен2-(оов 1n-en2- (oow
эКсиК кип щему раствору из 4,5 г (0,033 моль) безводного хлористого цинка и 10,1 г (0,05 моль) диэтилового эфира ацетондикарбоновой кислоты в 6,0 Л1л абсолютного спирта в течение 15 мин порци ми прибавл ют 5,2 г (0,033 моль) а-нафтохинона. Затем содержимое колбы нагревают в течение 35 мин. Реакционную массу охлаждают, выпавшие кристаллы отфильтровывают, промывают эфиром и сушат.acid A boiling solution of 4.5 g (0.033 mol) of anhydrous zinc chloride and 10.1 g (0.05 mol) of acetone dicarboxylic acid diethyl ester in 6.0 L1 of absolute alcohol is added in portions of 5.2 min in 15 minutes (0.033 mol) a-naphthoquinone. Then the contents of the flask are heated for 35 minutes. The reaction mass is cooled, the precipitated crystals are filtered off, washed with ether and dried.
Выход 3,2 г (29,6%, счита на а-нафтохинон ) с т. пл. 177-179°С (из спирта).Yield 3.2 g (29.6%, counted on a-naphthoquinone) with m. Pl. 177-179 ° C (from alcohol).
Найдено, %: С 66,63, 66,33; Н 5,57, 5,49. CigHiisOe.Found,%: C 66.63, 66.33; H 5.57, 5.49. CigHiisOe.
Вычислено, %: С 66,66; Н 5,31.Calculated,%: C, 66.66; H 5.31.
Предмет изобретени Subject invention
Способ получени этилового эфира 3-карбоэтокси-5-окси-а-нафтофуран-2-уксусной кислоты , отличающийс тем, что диэтиловый эфир ацетондикарбоповой кислоты конденсируют с а-нафтохиноном в присутствии безвод};ого хлористого цинка з среде абсолютного растворител при темперапуре кипени реакционной смеси.A method of producing 3-carboethoxy-5-hydroxy-a-naphtofuran-2-acetic acid ethyl ester, characterized in that the acetone dicarbopic acid diethyl ester is condensed with a-naphthoquinone in the presence of anhydrous; mixes.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU189418A1 true SU189418A1 (en) |
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