SU530881A1 - Method for producing 5-methyl-2-furancarboxylic acid - Google Patents
Method for producing 5-methyl-2-furancarboxylic acidInfo
- Publication number
- SU530881A1 SU530881A1 SU2169545A SU2169545A SU530881A1 SU 530881 A1 SU530881 A1 SU 530881A1 SU 2169545 A SU2169545 A SU 2169545A SU 2169545 A SU2169545 A SU 2169545A SU 530881 A1 SU530881 A1 SU 530881A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- carried out
- mol
- methyl
- producing
- furancarboxylic acid
- Prior art date
Links
Landscapes
- Furan Compounds (AREA)
Description
(54) СПОСОБ ПОЛУЧЕНИЯ 5МЕТИЛ-2-ФУРАНКАРБОНОВОЙ КИСЛОТЫ(54) METHOD FOR OBTAINING 5METHyl-2-FURANCARBONIC ACID
33
л ют и экстрагируют эфиром. Степень извлечени 98%.poured and extracted with ether. The recovery rate is 98%.
В оптимальных услови х выход 5-метил4 -2-фура1жар6оновой кислоты 48%, выход 2,,5-фурандикарбоновой кислоты не превышает 3%.Under optimal conditions, the yield of 5-methyl4 -2-fura1far6onic acid is 48%, the yield of 2, 5-furandicarboxylic acid does not exceed 3%.
Пример 1. 5,5 Г (0,05 моль) 5 метш1фурфур)ала, 2 г {0,О5 моль) гидроокиси натри , 11,5 г (О,О5моль) окиси| серебра и 10О мл воды выдерживают 6 чар в реакторе при температуре 134-157 С, давлении ЗО кг/см и расходе воздуха 9 л/мин на 1 л реакционной смеси. Ката-f лизатор отфильтровывают, промывают 10мл воды и подкисл ют фильтрат 2 мл сол ной1 кислоты, Оксидат содержит 2,98 г (48%) 5-метил-2-фуранкарбоновой кислоты, 0,25 г (3,3%) 2,5-фурандикарбоновой киолоты и 0,11 г (2,1%) непрореагировавшего 5-метилфурфурола.Example 1. 5.5 g (0.05 mol) 5 metsh1furfur) ala, 2 g {0, O5 mol) sodium hydroxide, 11.5 g (O, O5 mol) oxide | silver and 10 O ml of water is kept 6 spells in the reactor at a temperature of 134-157 C, pressure of 30 kg / cm and air flow rate of 9 l / min per 1 l of the reaction mixture. The kata-f lyser is filtered off, washed with 10 ml of water and the filtrate is acidified with 2 ml of hydrochloric acid, the oxidate contains 2.98 g (48%) of 5-methyl-2-furancarboxylic acid, 0.25 g (3.3%) 2, 5-furandicarbonic acid and 0.11 g (2.1%) of unreacted 5-methylfurfural.
Оксидат экстрагируют 3 х 50 мл эфир. Степень извлечени 5--метил-2--фуранкарбо новой кислоты 98%,The oxidate is extracted with 3 x 50 ml of ether. The recovery rate of 5 - methyl-2 - furancarboxylic acid is 98%,
Пример 2. 5,5 г В-метилфурфурола и 11,5 г окиси серебра в 90 хлорбензола выдерживают 5 час при температуре 150-165 Cj давлении ЗО кг/см и расходе ваадуха 1О л/мин на 1 л реакционной смеси. Оксидат содержит 1,31 г (28мол.% 5-метил-2-фуранкарбоноаой кислоты иExample 2. 5.5 g of B-methylfurfural and 11.5 g of silver oxide in 90 chlorobenzene are kept for 5 hours at a temperature of 150-165 Cj at a pressure of 30 kg / cm and a consumption of vacuum of 1O l / min per 1 l of the reaction mixture. The oxidate contains 1.31 g (28 mol.% 5-methyl-2-furancarboxylic acid and
|1,35 г (2, 5%) непрореагировавшего 5-метилфурфурола .| 1.35 g (2, 5%) of unreacted 5-methylfurfural.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2169545A SU530881A1 (en) | 1975-07-09 | 1975-07-09 | Method for producing 5-methyl-2-furancarboxylic acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2169545A SU530881A1 (en) | 1975-07-09 | 1975-07-09 | Method for producing 5-methyl-2-furancarboxylic acid |
Publications (1)
Publication Number | Publication Date |
---|---|
SU530881A1 true SU530881A1 (en) | 1976-10-05 |
Family
ID=20630841
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU2169545A SU530881A1 (en) | 1975-07-09 | 1975-07-09 | Method for producing 5-methyl-2-furancarboxylic acid |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU530881A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU197761U1 (en) * | 2019-09-02 | 2020-05-26 | Нина Владимировна Смирнова | LABORATORY STAND FOR THE PROCESSES OF OXIDATION OF FURANIC DERIVATIVES |
-
1975
- 1975-07-09 SU SU2169545A patent/SU530881A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU197761U1 (en) * | 2019-09-02 | 2020-05-26 | Нина Владимировна Смирнова | LABORATORY STAND FOR THE PROCESSES OF OXIDATION OF FURANIC DERIVATIVES |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN108623486A (en) | A kind of preparation method of V hydrochloride of salbutamol intermediate | |
SU530881A1 (en) | Method for producing 5-methyl-2-furancarboxylic acid | |
US3872166A (en) | Improvement in the recovery of glyoxylic acid | |
US2190377A (en) | Process for the production of keto gulonic acid from sorbose | |
Hearon et al. | Chemicals from cellulose | |
CN110759872A (en) | Method for removing saccharin in probenazole | |
SU118213A1 (en) | Method for producing para-aminosalicylic acid by carbonization and aminophenol | |
SU1054349A1 (en) | Process for preparing oxymethylfurfural | |
US4546203A (en) | Facile synthesis of β-hydroxy-β-methylglutaric acid | |
SU502004A1 (en) | The method of obtaining 4-hydroxy-4 "-carboxydiphenylsulfone | |
US4338462A (en) | Silver-catalyzed oxidation of methacrolein to methacrylic acid | |
SU636233A1 (en) | Method of obtaining 2,5-furandicarboxylic acid | |
SU124934A1 (en) | The method of obtaining dibasic acids from their alkali salts | |
SU408946A1 (en) | METHOD OF OBTAINING 5- (N-NITOPHENYL) -FURP.P-2 CARBONIC ACID | |
SU857122A1 (en) | Method of preparing o-toluenesulfamide | |
GB553317A (en) | Improvements in the production of alkaline earth metal pantothenates | |
SU649656A1 (en) | Method of isolating potassium permanganate from slime | |
KR890000394A (en) | Method for preparing hydroxy benzoic acid | |
SU522807A3 (en) | The method of isolation of rifamycin | |
SU629213A1 (en) | Method of obtaining alkaline or alkaline-earth salts of s-sulfopanteine | |
SU1039168A1 (en) | Method of producing 5-oxybenz-2,1,3-thiadiazol | |
SU1266838A1 (en) | Method of producing sodium hydrosulfite | |
KR890002255B1 (en) | Method of colleting famotidine from reaction liquid | |
SU1432004A1 (en) | Method of producing carbon monoxide | |
SU642294A1 (en) | Method of obtaining 2-methoxy-5-clorbenzoic acid |