SU161783A1 - - Google Patents
Info
- Publication number
- SU161783A1 SU161783A1 SU842922A SU842922A SU161783A1 SU 161783 A1 SU161783 A1 SU 161783A1 SU 842922 A SU842922 A SU 842922A SU 842922 A SU842922 A SU 842922A SU 161783 A1 SU161783 A1 SU 161783A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- oxide
- ether
- vinylfuran
- water
- sodium
- Prior art date
Links
- RTZKZFJDLAIYFH-UHFFFAOYSA-N diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- QQBUHYQVKJQAOB-UHFFFAOYSA-N 2-ethenylfuran Chemical compound C=CC1=CC=CO1 QQBUHYQVKJQAOB-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 229910000033 sodium borohydride Inorganic materials 0.000 description 3
- YOQDYZUWIQVZSF-UHFFFAOYSA-N sodium borohydride Substances [BH4-].[Na+] YOQDYZUWIQVZSF-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- ODGROJYWQXFQOZ-UHFFFAOYSA-N sodium;boron(1-) Chemical compound [B-].[Na+] ODGROJYWQXFQOZ-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- BGOGTIQMQIBZBO-UHFFFAOYSA-N 1-ethenyl-2,6-dioxabicyclo[3.1.0]hex-3-ene Chemical compound C1=COC2(C=C)C1O2 BGOGTIQMQIBZBO-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000002194 synthesizing Effects 0.000 description 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000012259 ether extract Substances 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N furane Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L na2so4 Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Description
а-Окиси 2-винилфураиов могут представить интерес в качестве реакиионноспособных исходных соединений в синтезе ироизводиых фуранового р да и мономеров дл нолимеризации . Однако до насто щего времени отсутствовали методы синтеза этого класса соединений . Поиьггки получени окиси 2-винилфурана окислением винилфурана не давали необходимых результатов.a-oxides of 2-vinylfuraiums may be of interest as reactive starting compounds in the synthesis of the furoic and production of monomers for the polymerization. However, until now there were no methods for the synthesis of this class of compounds. Powders for the preparation of 2-vinylfuran oxide by oxidation of vinylfuran did not give the desired results.
Предлагаемый способ получени а-окисен 2-винилфуранов заключаетс в восстановлении ю-бромацетофуранов боргидридом натри с последуюш,ей циклизацией действием щелочи.The proposed method for producing a-oxide of 2-vinylfurans consists in reducing sodium bromoacetofuran with sodium borohydride followed by cyclization by alkali.
Пример 1. Получение окиси 2-в пи и л ф у р а п а.Example 1. Obtaining oxide 2-in PI and l f at p and p a.
В трехгорлую колбу (на 500 мл, снабженную мешалкой, обратным холодильником и капельной воронкой, помещают 20,7 г (0,11 моль) 2-(оз-бромацетил)фурана (т. ил. 33-34°С) в 120 мл диоксана и за 15 мин прибавл ют по капл м охлажденный раствор 2,45 г (0,06 моль) боргидрида натри в 30 мл воды. Смесь кип т т 1 час и добавл ют 13,5лгл 2 п. HoSOj, выливают в 600 мл воды и обрабатывают 150 мл эфира. Эфирный экстракт прибавл ют за 20 мин к. 7,6 г едкого кали в 60 мл воды при энергичном перемещивании,In a three-necked flask (500 ml, equipped with a stirrer, reflux condenser, and an addition funnel, 20.7 g (0.11 mol) of 2- (oz-bromoacetyl) furan (t. Il. 33-34 ° C) in 120 ml are placed dioxane and in 15 minutes a cooled solution of 2.45 g (0.06 mol) of sodium borohydride in 30 ml of water is added dropwise. The mixture is boiled for 1 hour and 13.5 ml of 2 p. HoSOj are added and poured into 600 ml water and treated with 150 ml of ether. The ether extract is added in 20 minutes to 7.6 g of potassium hydroxide in 60 ml of water with vigorous movement,
отдел ют эфирный слой и высушивают его безводнымсульфатом натри .separating the ether layer and drying it with anhydrous sodium sulfate.
После отгонки эфира остаток перегон ют. При перегонке отбирают фракцию с т. кип.After distilling off the ether, the residue is distilled. During distillation, the fraction with mt bale is collected.
56°С (14 лиЛ, ,4888; d 1,1411. Выход56 ° C (14 lL, 4888; d 1.1411. Yield
67% от теоретического. Полученна таким образолг окись 2-винилфурана представл ет собой бесцветную жидкость и имеет следующий элементарный состав (в %): С 65,30; Н 5,71. (Рассчитано %: С 65,45; Н 5,49).67% of theoretical. The 2-vinylfuran oxide obtained in this way is a colorless liquid and has the following elemental composition (in%): C, 65.30; H 5.71. (Calculated%: C 65.45; H 5.49).
Пример 2. Окись 5-м е т и л-2-в и н и лфурана получают аналогично (за исключением того, что примен ют сииртовый раствор едкого кали) с выходом 20% и имеет следующие показатели; жидкое бесцветное вещество с т. кип. 68°С (6 мм), п|о 1,4812, d 1,0509.Example 2. Oxide 5-m et and l-2-b and n and lfurana are obtained in a similar way (except that a sodium hydroxide solution of caustic potassium is used) with a yield of 20% and has the following indicators; liquid colorless substance with m. kip. 68 ° C (6 mm), p | about 1.4812, d 1.0509.
Элементарный состав (в %); С 66,76; Н 7,56. (Рассчитано о/ц: С 67,18; П 7,24).Elementary composition (%); C, 66.76; H 7.56. (Calculated o / c: C 67.18; P 7.24).
Предмет изобретени Subject invention
Способ получени а-окисей 2-винилфуранов, отличающийс тем, что 2- (со-бромацетил )-фураны восстанавливают боргидридом натри и полученные при этом бромгидрины циклизуют действием щелочи.A process for the preparation of α-oxides of 2-vinylfurans, characterized in that 2- (co-bromoacetyl) -furans are reduced with sodium borohydride and the bromohydrins thus obtained are cyclized by alkali.
Publications (1)
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SU161783A1 true SU161783A1 (en) |
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