SU462814A1 - Method of producing methylcyclopropyl ketone - Google Patents
Method of producing methylcyclopropyl ketoneInfo
- Publication number
- SU462814A1 SU462814A1 SU1873704A SU1873704A SU462814A1 SU 462814 A1 SU462814 A1 SU 462814A1 SU 1873704 A SU1873704 A SU 1873704A SU 1873704 A SU1873704 A SU 1873704A SU 462814 A1 SU462814 A1 SU 462814A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- producing
- target product
- ketone
- methylcyclopropyl ketone
- methyl
- Prior art date
Links
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
1one
Изобретение относитс к способу получени метилциклопропилкетона, используемого в тонком органическом синтезе.This invention relates to a method for producing methylcyclopropyl ketone used in fine organic synthesis.
Известен способ получени метилциклопропилкетона изомеризацией 2-метил-4,5-дигидрофурана при 475-500°С с последующим выделением целевого продукта известными приемами .A known method for producing methylcyclopropyl ketone by isomerization of 2-methyl-4,5-dihydrofuran at 475-500 ° C, followed by isolation of the target product by known methods.
Выход целевого продукта 32%.The yield of the target product is 32%.
Недостатком известного способа вл етс низкий выход целевого продукта и проведение процесса при высоких температурах.The disadvantage of this method is the low yield of the target product and the process at high temperatures.
С целью повышени выхода целевого продукта и упрощени процесса предлагаетс использовать 2-метил-4,5-дигидрофуран в виде насыщенного пара в смеси с инертным газом и вести процесс в присутствии окиси алюмини в качестве катализатора, предпочтительно при 300-350°С.In order to increase the yield of the target product and simplify the process, it is proposed to use 2-methyl-4,5-dihydrofuran in the form of saturated steam mixed with an inert gas and conduct the process in the presence of alumina as a catalyst, preferably at 300-350 ° C.
Выход целевого продукта 85%.The yield of the target product is 85%.
И р и м е р. Кварцевую трубку (длина 400 мм, диаметр 20 мм) заполн ют 25 г промышленной окиси алюмини и помещают в электрическую печь с автоматической регулировкой температуры.And p and meer. A quartz tube (length 400 mm, diameter 20 mm) is filled with 25 g of industrial alumina and placed in an electric oven with automatic temperature control.
50 г исходного дигидросильвана, т. кип. 79-80°С/750 мм; г о 1,4301; 0,9039, подают на катализатор в виде насыщенного пара50 g of the original dihydrosilvana, t. Kip. 79-80 ° С / 750 mm; r about 1.4301; 0.9039, served on the catalyst in the form of saturated steam
22
в Токе азота в течение 2,5 час. Давление 1 атм, температура 310°С. В приемнике с вод ным охлаждением собирают 47 г (95%) катализата , при ректификации которого с выходом 85% выдел ют метилциклопропилкетон, т. кип.in the current of nitrogen for 2.5 hours. Pressure is 1 atm, temperature is 310 ° C. 47 g (95%) of catalyzate is collected in a water-cooled receiver, the distillation of which gives off 85% to give methylcyclopropyl ketone, m.p.
110°С/7бО мм; По 1,4252; 4 0,8984; т. пл. семикарбазона 120°С. Конверси 98%. Из катализата также выдел ют метилпропилкетон (3-4%), тетрагидросильван (4%), сильван (6%) и легкокип щие вещества (3%).110 ° C / 7 mm; 1.4252 each; 4 0.8984; m.p. semicarbazone 120 ° C. Conversion 98%. Methylpropyl ketone (3–4%), tetrahydrosilane (4%), sylvan (6%), and low-boiling substances (3%) are also isolated from catalyzate.
Предмет изобретени Subject invention
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1873704A SU462814A1 (en) | 1973-01-19 | 1973-01-19 | Method of producing methylcyclopropyl ketone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1873704A SU462814A1 (en) | 1973-01-19 | 1973-01-19 | Method of producing methylcyclopropyl ketone |
Publications (1)
Publication Number | Publication Date |
---|---|
SU462814A1 true SU462814A1 (en) | 1975-03-05 |
Family
ID=20539782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1873704A SU462814A1 (en) | 1973-01-19 | 1973-01-19 | Method of producing methylcyclopropyl ketone |
Country Status (1)
Country | Link |
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SU (1) | SU462814A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106554263A (en) * | 2016-11-16 | 2017-04-05 | 江苏清泉化学股份有限公司 | A kind of preparation method of cyclopropyl methyl ketone |
-
1973
- 1973-01-19 SU SU1873704A patent/SU462814A1/en active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106554263A (en) * | 2016-11-16 | 2017-04-05 | 江苏清泉化学股份有限公司 | A kind of preparation method of cyclopropyl methyl ketone |
CN106554263B (en) * | 2016-11-16 | 2019-11-08 | 江苏清泉化学股份有限公司 | A kind of preparation method of cyclopropyl methyl ketone |
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