SU194096A1 - METHOD OF OBTAINING 4 METILURACYL - Google Patents
METHOD OF OBTAINING 4 METILURACYLInfo
- Publication number
- SU194096A1 SU194096A1 SU1017908A SU1017908A SU194096A1 SU 194096 A1 SU194096 A1 SU 194096A1 SU 1017908 A SU1017908 A SU 1017908A SU 1017908 A SU1017908 A SU 1017908A SU 194096 A1 SU194096 A1 SU 194096A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- obtaining
- acetic acid
- metiluracyl
- yield
- technology
- Prior art date
Links
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 16
- 229960000583 Acetic Acid Drugs 0.000 description 6
- JUJWROOIHBZHMG-UHFFFAOYSA-N pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 4
- 239000004202 carbamide Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- SHVCSCWHWMSGTE-UHFFFAOYSA-N 6-methyluracil Chemical compound CC1=CC(=O)NC(=O)N1 SHVCSCWHWMSGTE-UHFFFAOYSA-N 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000002485 urinary Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
Известны способы получени 4-метилурацила взаимодействием мочевины с дикетено.м в присутствии пиридина.Methods are known for the preparation of 4-methyluracil by the reaction of urea with diketeno in the presence of pyridine.
Указанные способы имеют сложную технологию и не обеспечивают удовлетворительного выхода целевого нродукта.These methods have a complex technology and do not provide a satisfactory yield of the target product.
Сущность предлагаемого способа заключаетс в том, что процесс ведут в среде уксусной кислоты и уксусного агндрида при 60-80-С. Это упрощает технологию получепн целевого продукта и повышает его выход.The essence of the proposed method lies in the fact that the process is carried out in an environment of acetic acid and acetic acid at 60-80 ° C. This simplifies the technology to obtain the desired product and increases its yield.
П р п м е р. В круглодонную литрову о колбу , снабженную мешалкой и термометром, загружают 200 мл лед ной уксусной кислоты, 103,5 г уксусного ангндр да, 3,8 мл ппридипа и 60 г мочевнны. Реакционную массу нагревают при неремешивапнн до 6Г)°С и нрибавл ют 84 г дпкетена с такой скоростью, чтобы температура ie превышала 80°С. Смесь выдерживают еще 1 час при перемешивании п 80С, охлаждают до комнатной температуры, отфильтровывают 4-метплурацил и перекрнсталлизовывают его пз воды (1:10). Выход 68% от теоретического количества.PREMIER 200 ml of glacial acetic acid, 103.5 g of acetic acid, 3.8 ml of primed and 60 g of urinary are loaded into a round bottom liter of a flask equipped with a stirrer and a thermometer. The reaction mass is heated under unmixing to 6 ° C) ° C and 84 g of dpketene are added at such a rate that the temperature, i, exceeds 80 ° C. The mixture is kept for 1 hour while stirring p 80C, cooled to room temperature, 4-metpluracil is filtered off and rectified with pz of water (1:10). Yield 68% of theoretical amount.
Предмет и з о б р е т е п и The subject and s obretep
Способ получени 4-метнлурацила взаимодействием мочевины с дикетепом в нрисутствии пиридина, отличающийс тем, что, с целью упрощеин технологии получени целевого нродукта п повышени его выхода, процесс ведут в среде уксусной кислоты п уксусного ангндрнда прп 60-80С.The method of producing 4-metluracil by the interaction of urea with diketep in the presence of pyridine, characterized in that, in order to simplify the technology of obtaining the desired product and increase its yield, the process is carried out in an acetic acid medium of acetic acid angondrum of 60-80C.
Publications (1)
Publication Number | Publication Date |
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SU194096A1 true SU194096A1 (en) |
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