SU248664A1 - S PATENT. '' * 'TEKHKL'gggg-dl ^^^^^^^^^^^^^^^^^^^^^^^^^^ line - Google Patents
S PATENT. '' * 'TEKHKL'gggg-dl ^^^^^^^^^^^^^^^^^^^^^^^^^^ lineInfo
- Publication number
- SU248664A1 SU248664A1 SU1238179A SU1238179A SU248664A1 SU 248664 A1 SU248664 A1 SU 248664A1 SU 1238179 A SU1238179 A SU 1238179A SU 1238179 A SU1238179 A SU 1238179A SU 248664 A1 SU248664 A1 SU 248664A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- tekhkl
- gggg
- line
- target product
- distilled
- Prior art date
Links
- XHXFXVLFKHQFAL-UHFFFAOYSA-N Phosphoryl chloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- UHZYTMXLRWXGPK-UHFFFAOYSA-N Phosphorus pentachloride Chemical compound ClP(Cl)(Cl)(Cl)Cl UHZYTMXLRWXGPK-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
- 238000010992 reflux Methods 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 2
- JSPLKZUTYZBBKA-UHFFFAOYSA-N Trioxidane Chemical compound OOO JSPLKZUTYZBBKA-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OWHSZQHZBUQBRH-UHFFFAOYSA-N N,N-dipentylformamide Chemical compound CCCCCN(C=O)CCCCC OWHSZQHZBUQBRH-UHFFFAOYSA-N 0.000 description 1
- FAIAAWCVCHQXDN-UHFFFAOYSA-N Phosphorus trichloride Chemical compound ClP(Cl)Cl FAIAAWCVCHQXDN-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L cacl2 Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- 239000012259 ether extract Substances 0.000 description 1
- 230000002363 herbicidal Effects 0.000 description 1
- 239000004009 herbicide Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Description
Соединение, получаемое по предлагаемому способу, можно примен ть в органическом синтезе дл получени , например, гербицидов, эпоксидов.The compound obtained by the proposed method can be used in organic synthesis to obtain, for example, herbicides, epoxides.
Известен способ получени 2-метил-1,3-дихлорбутена-2 взаимодействием метилэтилкетона , диаметилформамида и хлорокиси фосфора . Однако этот способ сложно осуществить , и выход целевого продукта недостаточно высок (17-19%).A known method for producing 2-methyl-1,3-dichlorobutene-2 by the interaction of methyl ethyl ketone, diamylformamide and phosphorus oxychloride. However, this method is difficult to implement, and the yield of the target product is not high enough (17-19%).
Дл упрощени процесса и увеличени выхода целевого продукта 1-окси-2-метилбутанон подвергают взаимодействию с п тихлористым фосфором при температуре от О до 45°С с выделением целевого продукта перегонкой.To simplify the process and increase the yield of the target product, 1-hydroxy-2-methylbutanone is reacted with phosphorus pentachloride at a temperature from 0 to 45 ° C to isolate the target product by distillation.
Пример. В трехгорлую колбу, снабженную меха1нической мешалкой, обратным холодильником , термометром и капельной воронкой , помещают 83,4 г (0,4 моль) п тихлористого фосфора. Колбу погружают в охлаждающую смесь (лед - -соль), температуру которой поддерживают О-10°С. В колбу медленно прикапывают 20,4 г (0,2 моль) 1-окси2-метилбутанона . После прибавлени Vs части кетоспирта мешалку пускают в ход и продолжают прикапывание кетоспирта с такой скоростью , чтобы температура смеси .не подн лась выше 25°С. Затем смесь при перемешивании нагревают на вод ной бане при 40-45°С до полного растворени п тихлористого фосфора ( мин).Example. In a three-necked flask equipped with a mechanical stirrer, a reflux condenser, a thermometer, and an addition funnel, 83.4 g (0.4 mol) of phosphorus pentachloride are placed. The flask is immersed in a cooling mixture (ice - - salt), the temperature of which is maintained at -10 ° C. 20.4 g (0.2 mol) of 1-oxy2-methylbutanone are slowly added dropwise to the flask. After the Vs part of the keto alcohol has been added, the agitator is floated and the keto alcohol is kept dropping at such a rate that the temperature of the mixture does not rise above 25 ° C. Then the mixture is heated with stirring in a water bath at 40-45 ° C until complete dissolution of phosphorus pentachloride (min).
Колбу соедин ют с елочным дефлегматором длиной 40-45 см и отгон ют хлорокись фосфора под вакуумом водоструйного насоса при 50-55°С/90-100 мм рт. ст. Перегон етс 57,7 г (94% от теории) хлорокиси фосфора. Остаток раствор ют в 20 мл бензола и при охлаждении встр хивают 20%-ным раствором едкого кали до получени посто нной щелочной среды. Затем отдел ют бензольный слой, а водный несколько раз экстрагируют эфиром. Эфирные экстракты присоедин ют к бензольному слою, промывают малым количеством воды, высушивают хлористым кальцием. Растворитель отгон ют дефлегматором, а остаток перегон ют в вакууме при 65-68°С/28 мм рт. ст.The flask is connected to a fir-tree reflux condenser with a length of 40-45 cm and phosphorus oxychloride is distilled off under vacuum of a water-jet pump at 50-55 ° C / 90-100 mm Hg. Art. 57.7 g (94% of theory) of phosphorus oxychloride are distilled. The residue is dissolved in 20 ml of benzene and, with cooling, shaken with a 20% potassium hydroxide solution to obtain a constant alkaline medium. The benzene layer is then separated, and the aqueous layer is extracted several times with ether. The ether extracts are added to the benzene layer, washed with a small amount of water, dried with calcium chloride. The solvent is distilled off with a reflux condenser, and the residue is distilled in vacuum at 65-68 ° C / 28 mm Hg. Art.
Получают 17,3-18,7 г (60-65% от теории ) 2-метил-1,3-дихлорбутена-2; Пв 1,4745; d4 1,5000; MRo найдено 34,00; вычислено 34,55.17.3-18.7 g (60-65% of theory) of 2-methyl-1,3-dichlorobutene-2 are obtained; Pv 1.4745; d4 1.5000; MRo found 34.00; calculated 34.55.
Найдено, %: С 43,02; Н 5,98; CI 50,89.Found,%: C 43.02; H 5.98; CI 50.89.
CsHsCU.CsHsCU.
Вычислено, %: С 43,16; Н 5,76; С1 51,08.Calculated,%: C 43.16; H 5.76; C1 51.08.
Предмет изобретени Способ получени 2-метил-1,3-дихлорбутепа-2 , отличающийс тем, что, с целью упрощени процесса и увеличени выхода целевого продукта, 1-окси-2-метилбутанон подвергают взаимодействию с п тихлористым фосфором при температуре от О до 45°С с выделением целевого продукта перегонкой.The subject of the invention is a method for producing 2-methyl-1,3-dichlorobutepa-2, characterized in that, in order to simplify the process and increase the yield of the target product, 1-hydroxy-2-methylbutanone is reacted with phosphorus chloride at a temperature from 0 to 45 ° C with the selection of the target product by distillation.
Publications (1)
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SU248664A1 true SU248664A1 (en) |
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