SU397002A1 - USSR Academy of Sciences - Google Patents
USSR Academy of SciencesInfo
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- SU397002A1 SU397002A1 SU1681638A SU1681638A SU397002A1 SU 397002 A1 SU397002 A1 SU 397002A1 SU 1681638 A SU1681638 A SU 1681638A SU 1681638 A SU1681638 A SU 1681638A SU 397002 A1 SU397002 A1 SU 397002A1
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- USSR - Soviet Union
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- ussr academy
- acrolein
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
1one
Изобретение относитс к снособу получени новых соединений - 2-оксиалкокси-3,4-дигндропиранов , которые могут найти применение в синтезе полимеров и физиологически-активных веществ.The invention relates to a procedure for the preparation of new compounds, 2-hydroxyalkoxy-3,4-dihydropyranes, which can be used in the synthesis of polymers and physiologically active substances.
Способ основан на известной в органическом синтезе реакции получени оксипроизводных 2-окси-3,4-дигидропиранов конденсацией а-, р-ненасыщенных карбонилсодержащих соединений, например акролеина, с виниловыми эфирами спиртов.The method is based on the reaction in the preparation of hydroxy derivatives of 2-hydroxy-3,4-dihydropyran, which is known in organic synthesis, by condensing a-, p-unsaturated carbonyl-containing compounds, for example acrolein, with vinyl ethers of alcohols.
Предлагаемый способ заключаетс в том, что акролеин подвергают взаимодействию с моновинило-выми эфирами гликолей при нагревании с выделением целевого продукга обычными нриемами.The proposed method consists in the fact that acrolein is reacted with monovinyl ethers of glycols when heated to release the desired product with the usual uses.
Пример I. Получение 2-оксиэтокси-3,4-дигидропирана . В стальной вращающийс автоклав объемом 0,25 л помещают 11,2 г (0,2 моль) акролеина, содержащего 1% гидрохинона , 17,62 г (0,2 моль) моиовинилового эфира этиленгликол и нагревают при 135°С в течение 4 час. Полученную смесь разгон ют в вакууме. Получают 18,1 г 2-оксиэтокси-3,4дигидропнрана (выход 62,9%) с т. кип. 70°С Example I. Preparation of 2-hydroxyethoxy-3,4-dihydropyran. In a steel rotating autoclave with a volume of 0.25 l, 11.2 g (0.2 mol) of acrolein containing 1% hydroquinone, 17.62 g (0.2 mol) of ethylene glycol myovinyl ether are placed and heated at 135 ° C for 4 hours . The mixture was distilled in vacuo. 18.1 g of 2-hydroxyethoxy-3,4 dihydropnran are obtained (yield 62.9%) with a bale. 70 ° C
1,4720; df 1,1129; MRn1.4720; df 1.1129; Mrn
2020
(3 мм рт. ст.)(3 mmHg. Art.)
ГR
найдено 36.31 (вычислено 37,19).found 36.31 (calculated 37.19).
Найдено. %:С 58.09; 58,44; Н 8.i2; 8.36.Found %: C 58.09; 58.44; H 8.i2; 8.36.
СгН.гОз.SgN. Go.
Вычислено. %: С 58,31; Н 8,39.Calculated. %: C 58.31; H 8.39.
Пример 2. Получение 2-оксипр01юкси-3,4дигидропирана . Синтез провод т но примеру 1, исход из .моновинилового эфира 1,2-нропиленгликол и акролеина. Выход 32,3%; т. кип. (5 мм рт. ст.); /4° 1,4640; df 1,0650; MRii найдено 40,99 (вычислено 41.79).Example 2. Getting 2-hydroxy-3,4-dihydropyran. The synthesis is carried out according to Example 1, starting from 1,2-nropylene glycol monovinyl ether and acrolein. Yield 32.3%; m.p. (5 mm Hg. Art.); / 4 ° 1.4640; df 1.0650; MRii found 40.99 (calculated 41.79).
Пайдено. %: С 60.52; 60,42; Н 8.85; 8,87.Paydeno. %: C 60.52; 60.42; H 8.85; 8.87.
CgHnOs.CgHnOs.
Вычислено, %: С 60,73; П 8,92.Calculated,%: C 60.73; П 8,92.
Предмет изобретени Subject invention
Способ получени 2-оксиалкокси-3.4-дигидрониранов , отличающийс тем, что акролеин подвергают взаимодействию с моновиниловыми эфирами гликолей при нагревании с выделением целевого продукта обычными приемами.A process for the preparation of 2-hydroxyalkoxy-3.4-dihydroniranes, characterized in that acrolein is reacted with glycol monovinyl ethers when heated to release the desired product by conventional methods.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1681638A SU397002A1 (en) | 1971-07-16 | 1971-07-16 | USSR Academy of Sciences |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1681638A SU397002A1 (en) | 1971-07-16 | 1971-07-16 | USSR Academy of Sciences |
Publications (1)
Publication Number | Publication Date |
---|---|
SU397002A1 true SU397002A1 (en) | 1974-08-25 |
Family
ID=20483039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1681638A SU397002A1 (en) | 1971-07-16 | 1971-07-16 | USSR Academy of Sciences |
Country Status (1)
Country | Link |
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SU (1) | SU397002A1 (en) |
-
1971
- 1971-07-16 SU SU1681638A patent/SU397002A1/en active
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