SU176912A1 - Method of producing 2-methylimidazole - Google Patents
Method of producing 2-methylimidazoleInfo
- Publication number
- SU176912A1 SU176912A1 SU909570A SU909570A SU176912A1 SU 176912 A1 SU176912 A1 SU 176912A1 SU 909570 A SU909570 A SU 909570A SU 909570 A SU909570 A SU 909570A SU 176912 A1 SU176912 A1 SU 176912A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- methylimidazole
- producing
- nickel
- temperature
- mixture
- Prior art date
Links
- LXBGSDVWAMZHDD-UHFFFAOYSA-N 2-methyl-1H-imidazole Chemical compound CC1=NC=CN1 LXBGSDVWAMZHDD-UHFFFAOYSA-N 0.000 title description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- 229910052759 nickel Inorganic materials 0.000 description 5
- 239000000203 mixture Substances 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- MCTWTZJPVLRJOU-UHFFFAOYSA-N 1-Methylimidazole Chemical compound CN1C=CN=C1 MCTWTZJPVLRJOU-UHFFFAOYSA-N 0.000 description 1
- -1 2-methylimidazole dehydrogenated 2-methylimidazole Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 235000014101 wine Nutrition 0.000 description 1
Description
Извеетпо получение 2-метилимидазола дегидрированием 2-метилнмидазолина в нрисутетвии свежевосстановлепиого никел при температуре 170-200 С. При этом получаетс продукт, загр зпенный постороинимн примес ми , ДЛЯ чего требуетс сложна очистка - иерегонка в вакууме с носоТедуюнтей двукратной кристаллизаиней из бензола.Izveetpo preparation of 2-methylimidazole 2-dehydrogenation metilnmidazolina in nrisutetvii svezhevosstanovlepiogo nickel at a temperature of 170-200 C. The obtained product contaminated zpenny postoroinimn impurities, which requires complicated cleaning - ieregonka in vacuo to nosoTeduyuntey kristallizainey twice from benzene.
С це;гыо упрои 1,енн процесса предложено получать 2-метилимидазол дегидрированне.м 2-метилимидазолнна в присутствии никел Репе при температуре 170-220 С.With the price of the process, it was proposed to obtain 2-methylimidazole dehydrogenated 2-methylimidazole in the presence of Repee nickel at a temperature of 170-220 ° C.
Пример. К 0,7-3,3 г водной (или промытой ЭТИЛОВЫМ спиртом) пасты никел Рене ирибавл ют 16,8 г (0,2 моль) 2-метилимндазолина , смесь быстро нагревают до . При этом начинаетс быстрое выделенне водорода . Нагревание продолжают при постепенном повышении температуры реакционной массы до , до прекращени выделени Example. To 0.7-3.3 g of aqueous (or washed with ethyl alcohol) Rene nickel paste and 16.8 g (0.2 mol) of 2-methylimndazoline nickel, the mixture is quickly heated to. This starts the rapid release of hydrogen. Heating is continued with a gradual increase in the temperature of the reaction mass until, until the evolution of the mixture ceases.
водорода. В зависимости от KOviH4ecTBa каталн .загора реакци может проходить за 50-9С мин. По окончании иагреваии массу охлаждают до 20-50 С, прибавл ют этиловый синрт (50-100 -1Ь7), кнп т т с активированным углем, фильтруют и растворитель отгон ют досуха. Крнсталлнческнй остаток высуншвают при 45-50 С.hydrogen. Depending on the KOviH4ecTBa catalysis of the fire, the reaction can take place in 50-9 ° C min. At the end of the treatment, the mass is cooled to 20–50 ° C, ethyl synrt (50–100-1b7) is added, the mixture with activated carbon is filtered, and the solvent is distilled off to dryness. The crystalline residue is suspended at 45-50 C.
Получают 13,9--14,7 г (SS-QOu/o от теоретического ) 2-метнлнмидазола с т. нл. 139- 142 С.13.9--14.7 g (SS-QOu / o from the theoretical) of 2-methylnmidazole are obtained with t. 139- 142 p.
Предмет изобретени Subject invention
Сиособ поллчени 2-,1етилимидазола дегндрироваиием 2-метилимидазолииа в нрисутст вин каталнзатора при темиературе 170-200-С. отличают ийс тем, что, с целью упрощени процесса, в качестве катализатора исиользуют никель Рене .The method of polishing 2-, 1-methylimidazole by 2-methyl-2-imidazolium in a nrisut of catalnzator wines with a temperature of 170-200-C. They are distinguished by the fact that, in order to simplify the process, Rene nickel is used as a catalyst.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU176912A1 true SU176912A1 (en) |
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