SU139318A1 - The method of obtaining n-nitro-alpha-chlorocarlic aldehyde - Google Patents
The method of obtaining n-nitro-alpha-chlorocarlic aldehydeInfo
- Publication number
- SU139318A1 SU139318A1 SU667586A SU667586A SU139318A1 SU 139318 A1 SU139318 A1 SU 139318A1 SU 667586 A SU667586 A SU 667586A SU 667586 A SU667586 A SU 667586A SU 139318 A1 SU139318 A1 SU 139318A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- nitro
- aldehyde
- chlorocarlic
- alpha
- obtaining
- Prior art date
Links
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
€°€ °
-- -
NO2 CHjCl СНОН NO2 CHjCl SNON
-CHaCI- CHOH NOj-CHaCI- CHOH NOj
ОНHE
(СНзСО )„ о .., (СНЗСО) „o ..,
- . ..fctf. oNOo- V--. ..fctf. oNOo- V-
НзО -- NZO -
--/- /
р п г,,,г1-С -СС1-Сp p g ,,, g1-C-CC1-C
Н,0 H, 0
ЫОг Yo
Пример. 10,0 г п-нитробензальдегида и 10,0 г кристаллического димергидрата хлоруксусного альдегида смешивают с 50 мл охлажденного до температуры 5-7° метилового спирта. При перемешивании в. течение 2-3 час добавл ют 1,5-2,0 мл 25%-ного спиртового раствора едкого кали, так, чтобы значение рН оставалось равным 9,0. Температура при этом поддерживаетс на уровне 5-7°. По окончании загрузки щелочи к смеси прибавл ют 20 мл уксусного ангидрида и кнп т т в течение 1 час с обратным холодильником. Охлажденный раствор вливают в 250 мл воды, прибавл ют 30 мл 15%-ного раствора сол ной кислоты и кип т т полученную смесь с обратным холодильником еше в течении 30 мин. После сто ни отдел ют выпавший осадок п-нитро-а-хлоркоричного альдегида. Вес осадка - 8г. После перекристаллизации из этилового спирта получают 4 г крупнокристаллического светло-желтого осадка с т. пл. 145-146.Example. 10.0 g of p-nitrobenzaldehyde and 10.0 g of chloroacetic aldehyde crystalline dimer hydrate are mixed with 50 ml of methyl alcohol cooled to a temperature of 5-7 °. With stirring c. Within 2-3 hours, 1.5-2.0 ml of a 25% strength potassium hydroxide solution is added, so that the pH value remains at 9.0. The temperature is maintained at a level of 5-7 °. At the end of the alkali loading, 20 ml of acetic anhydride and the mixture were heated to reflux for 1 hour. The cooled solution is poured into 250 ml of water, 30 ml of a 15% hydrochloric acid solution are added and the mixture is refluxed for another 30 minutes. After standing, the precipitated p-nitro-a-chlorocarnicoldehyde precipitate is separated. Draft weight - 8g. After recrystallization from ethyl alcohol, 4 g of a large-crystalline, light yellow precipitate with a melting point of 200 g is obtained. 145-146.
Предмет изобретени Subject invention
. Способ получени -нитро-а-хлоркоричного альдегида, отличающийс тем, что, с целью упрои1ени синтеза и использовани новых видов сырь , димергидрат хлоруксусного альдегнда конденсируют с п-нитробензальдегидом в присутствии раствора едкого кали в метиловом спирте.. The method of producing -nitro-chlorocinnamic aldehyde, characterized in that, in order to simplify the synthesis and use of new types of raw materials, chloroacetic aldegde dimer hydrate is condensed with p-nitrobenzaldehyde in the presence of potassium hydroxide solution in methyl alcohol.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU667586A SU139318A1 (en) | 1960-05-23 | 1960-05-23 | The method of obtaining n-nitro-alpha-chlorocarlic aldehyde |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU667586A SU139318A1 (en) | 1960-05-23 | 1960-05-23 | The method of obtaining n-nitro-alpha-chlorocarlic aldehyde |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU139318A1 true SU139318A1 (en) | 1960-11-30 |
Family
ID=48295412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU667586A SU139318A1 (en) | 1960-05-23 | 1960-05-23 | The method of obtaining n-nitro-alpha-chlorocarlic aldehyde |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU139318A1 (en) |
-
1960
- 1960-05-23 SU SU667586A patent/SU139318A1/en active
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