SU281451A1 - METHOD FOR OBTAINING COMPLEX ETHERS OF DIALCOXY OR TETRAALCOXYDIPHENYLMETANDICARBONIC ACIDS - Google Patents
METHOD FOR OBTAINING COMPLEX ETHERS OF DIALCOXY OR TETRAALCOXYDIPHENYLMETANDICARBONIC ACIDSInfo
- Publication number
- SU281451A1 SU281451A1 SU1302134A SU1302134A SU281451A1 SU 281451 A1 SU281451 A1 SU 281451A1 SU 1302134 A SU1302134 A SU 1302134A SU 1302134 A SU1302134 A SU 1302134A SU 281451 A1 SU281451 A1 SU 281451A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- tetraalcoxydiphenylmetandicarbonic
- dialcoxy
- acids
- obtaining complex
- complex ethers
- Prior art date
Links
- 239000002253 acid Substances 0.000 title description 3
- 150000007513 acids Chemical class 0.000 title 1
- 150000002170 ethers Chemical class 0.000 title 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 4
- UCFFGYASXIPWPD-UHFFFAOYSA-N Methyl hypochlorite Chemical compound COCl UCFFGYASXIPWPD-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- HQWPLXHWEZZGKY-UHFFFAOYSA-N Diethylzinc Chemical compound CC[Zn]CC HQWPLXHWEZZGKY-UHFFFAOYSA-N 0.000 description 1
- 102000014961 Protein Precursors Human genes 0.000 description 1
- 108010078762 Protein Precursors Proteins 0.000 description 1
- JIAARYAFYJHUJI-UHFFFAOYSA-L Zinc chloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 125000004356 hydroxy functional group Chemical group O* 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- OZAIFHULBGXAKX-UHFFFAOYSA-N precursor Substances N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
Description
Изобретение отпоситс к усовершенствованию способа .получени сложных диалкокси- и тетраалкоксидифепилметандикарбоновых кислот , которые наход т применение в полимерной промышленности.The invention calls for the improvement of the process for the preparation of complex dialkoxy and tetraalkoxydiphenylmethane dicarboxylic acids, which are used in the polymer industry.
Известный способ конденсации на основе формальдегида и сложных эфиров окси- и алкокоибензойных кислот в присутствии серной кислоты или хлористого цинка не позвол етThe known condensation method based on formaldehyde and hydroxy and alkanoibenzoic acid esters in the presence of sulfuric acid or zinc chloride does not allow
гС1СНг о- СНз-f-Zn - получать целевой продукт с высоким или практически удовлетворительным выходом.gC1CHN o-CH3-f-Zn - to obtain the target product with high or almost satisfactory yield.
Дл повышени выхода целевого продукта предложен способ, по которому берут формальдегид , образуюш,ийс в процессе реакции металлического цинка с хлордиметиловым эфиром. Эти исходные продукты предотвраш;ают гидролиз сложноэфирных групп. Процесс идет по схемеTo increase the yield of the target product, a method has been proposed by which formaldehyde is taken, which forms in the course of the reaction of metallic zinc with chloromethyl ether. These precursors prevent hydrolysis of ester groups. The process goes according to the scheme
00
-С t 7пС1г- -СНз- СНз Н-С t 7пС1г- -СНз-СНз Н
+ Н-С+ H-C
COORsCOORs
COOR.COOR.
где RI и Кг - алкил с Ci-€4.where RI and Kg are alkyl with Ci- € 4.
Общие услови проведени реакций следуюшие .The general reaction conditions are as follows.
В круглодопную колбу, сиабженную холодильником , мешалкой и -капельной воронкой, помеш;ают сложный эфир алкоксибензойной кислоты, растворенный в небольшом количест30 безводного диэтилового эфира, и цинк в виде стружки. При перемешиванш постепенно в течение 1 час прибавл ют хлордиметиловый эфир. Затем колбу нагревают на вод ной бане еще 1 час, после чего дл растворени образовавшихс солей прибавл ют воду. Очень часто при этом синтезируемый продуктAn alkoxybenzoic acid ester dissolved in a small quantity of anhydrous diethyl ether and zinc in the form of shavings are placed in a round-dipped flask, which is condensed with a refrigerator, stirrer and a dropping funnel. With stirring, chloromethyl ether was added gradually over 1 hour. The flask is then heated in a water bath for another 1 hour, after which water is added to dissolve the salts formed. Very often with this synthesized product
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU281451A1 true SU281451A1 (en) |
Family
ID=
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2397508A (en) | Hydroxamic acids | |
| DE1793559A1 (en) | Furan-3-carboxylic acids and their esters | |
| GB2034313A (en) | Process for the preparation of n-phosphonomethyl glycine | |
| SU281451A1 (en) | METHOD FOR OBTAINING COMPLEX ETHERS OF DIALCOXY OR TETRAALCOXYDIPHENYLMETANDICARBONIC ACIDS | |
| US2070991A (en) | Process for the production of acid amides | |
| US4058553A (en) | Method of preparing alkoxymethylenemalonic acid esters | |
| US20090023945A1 (en) | Synthesis of half esters | |
| US2101821A (en) | Manufacture of unsaturated or ganic compounds | |
| US2939880A (en) | Alkoxy-hydroxy substituted carboxylic acids and their esters and production thereof | |
| US2866816A (en) | Production of aryloxy compounds | |
| SU189420A1 (en) | METHOD OF OBTAINING COMPLEX ETHERES OF A-KETO ACIDS | |
| SU166428A1 (en) | METHOD OF OBTAINING METAL CORROSION INHIBITOR | |
| SU154355A1 (en) | ||
| US2449988A (en) | Preparation of polycarboxylic acids | |
| SU179297A1 (en) | METHOD FOR OBTAINING COMPLEX ESTERS OF OXYCARBONIC ACIDS | |
| SU316689A1 (en) | METHOD OF OBTAINING | |
| SU199145A1 (en) | ||
| US4477384A (en) | Preparation of α-substituted acrylic acids | |
| JPH08208565A (en) | Production of ethyl lactate | |
| CZ217990A3 (en) | Process for preparing polymers of aluminium oxide carboxylate | |
| SU156546A1 (en) | ||
| SU297645A1 (en) | METHOD FOR PREPARATION OF MOPARIL ETHER | 3-ALKOXYVIPYLPHOSPHONE ACIDS | |
| SU402217A1 (en) | METHOD OF OBTAINING COMPLEX ETHERS OF ADENOSINE-5'-CARBIC ACID | |
| SU212155A1 (en) | METHOD FOR OBTAINING METACRYLIC ACID AND (OR) ITS DERIVATIVES | |
| SU284988A1 (en) | METHOD OF OBTAINING KETHETHYLOPHOSPIPHYL ACID ESTERS |