SU237153A1 - METHOD FOR PRODUCING PYRROLOS DERIVATIVES - Google Patents
METHOD FOR PRODUCING PYRROLOS DERIVATIVESInfo
- Publication number
- SU237153A1 SU237153A1 SU1200876A SU1200876A SU237153A1 SU 237153 A1 SU237153 A1 SU 237153A1 SU 1200876 A SU1200876 A SU 1200876A SU 1200876 A SU1200876 A SU 1200876A SU 237153 A1 SU237153 A1 SU 237153A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- derivatives
- pyrrolos
- producing
- solution
- distilled
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 9
- 238000009835 boiling Methods 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000005695 Ammonium acetate Substances 0.000 description 2
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 2
- USFZMSVCRYTOJT-UHFFFAOYSA-N ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 description 2
- 229940043376 ammonium acetate Drugs 0.000 description 2
- 235000019257 ammonium acetate Nutrition 0.000 description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000003385 sodium Chemical class 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- SWTCCCJQNPGXLQ-UHFFFAOYSA-N 1-(1-butoxyethoxy)butane Chemical compound CCCCOC(C)OCCCC SWTCCCJQNPGXLQ-UHFFFAOYSA-N 0.000 description 1
- QSLLFYVBWXWUQT-UHFFFAOYSA-N 7-Azaindolizine Chemical class C1=NC=CN2C=CC=C21 QSLLFYVBWXWUQT-UHFFFAOYSA-N 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 125000004429 atoms Chemical group 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000012259 ether extract Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atoms Chemical class [H]* 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- ZSKGQVFRTSEPJT-UHFFFAOYSA-N pyrrole-2-carboxaldehyde Chemical compound O=CC1=CC=CN1 ZSKGQVFRTSEPJT-UHFFFAOYSA-N 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- -1 sodium alkoxide Chemical class 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing Effects 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
Description
Изобретение относитс к сиособу иолучеии соединений, которые могут найти ирименение в качестве иромежуточных соединений дл синтеза биологически активных веществ.The invention relates to a synthetic method and to the formation of compounds that can be used as intermediates for the synthesis of biologically active substances.
Предлагаемый способ получени производных пирроло-(1,2-а)-пиразина общей формулыThe proposed method for the preparation of pyrrolo- (1,2-a) -pyrazine derivatives of the general formula
где R, RI, Ra, Rs и R4 - водород, алкил, арил заключаетс в том, что натриевые производные 2-ацилпиррола, замещенные в положени х 3,4,5-ииррольного цикла и не содержащие заместител в 1-положении, подвергают взаимодействию с а-бромкарбонильными соединени ми или с их аиетал ми и полученные дикарбоиильные производные пиклизуют в ирисутствии ацетата аммони в кип щей уксусной кислоте. Целевой продукт выдел ют известными приемами.where R, RI, Ra, Rs, and R4 are hydrogen, alkyl, aryl, the sodium derivatives of 2-acylpyrrole, substituted at the 3,4,5-yrrole ring and not containing substituents in the 1-position, are reacted with a-bromocarbonyl compounds or with their aetals and the resulting dicarboyl derivatives are piclised in the presence of ammonium acetate in boiling acetic acid. The desired product is isolated by known techniques.
К суспензии 19 г (0,2 моль) 2-формилпиррола в 50 мл диоксана прибавл ют сппртовый раствор алкогол та натри , приготовленный из 4,6 г (0,02 г атом) натри . От образовавшегое раствора отгон ют растворители (остаток растворителей отгон ют в вакууме). К твердому натриевому производному 2-формплпиррола прибавл ют при перемешивании раствор 50,6 г (0,2 моль) дибутилового ацетал бромуксусного альдегида в 100 мл сухого диметилформамида и смесь кип т т 1 час. Реакционную массу выливают в воду, выделившеес масло экстрагируют бензолом и сущат . Растворитель отгон ют в вакууме, оставшеес масло раствор ют в 250 мл уксусной кислоты, добавл ют 150 г ацетата аммони и смесь кип т т 2 час. Уксусную кислоту отгон ют в вакууме, остаток раствор ют в воде, выделившуюс смолу отдел ют, а маточныйTo a suspension of 19 g (0.2 mol) of 2-formylpyrrole in 50 ml of dioxane is added a solution of sodium alkoxide prepared from 4.6 g (0.02 g atom) of sodium. Solvents are distilled off from the resulting solution (the remaining solvents are distilled off in vacuo). With stirring, a solution of 50.6 g (0.2 mol) of dibutyl acetal bromoacetic aldehyde in 100 ml of dry dimethylformamide was added with stirring to the solid sodium derivative of 2-formylpyrrole and the mixture was boiled for 1 hour. The reaction mass is poured into water, the separated oil is extracted with benzene and existed. The solvent is distilled off in vacuo, the remaining oil is dissolved in 250 ml of acetic acid, 150 g of ammonium acetate are added and the mixture is boiled for 2 hours. Acetic acid is distilled off in vacuo, the residue is dissolved in water, the separated resin is separated, and the mother liquor is removed.
раствор подщелачивают концентрированным раствором едкого натра до щелочной реакции. Образовавшуюс эмульсию экстрагируют эфиром. Эфирный экстракт взбалтывают с 10 г активированного угл , фильтруют, сушатthe solution is alkalinized with a concentrated solution of caustic soda until alkaline. The resulting emulsion is extracted with ether. The ether extract is shaken with 10 g of activated carbon, filtered, dried
Publications (1)
Publication Number | Publication Date |
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SU237153A1 true SU237153A1 (en) |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3891643A (en) * | 1972-05-15 | 1975-06-24 | American Home Prod | Pyrrolo{8 1,2,3-de{9 quinoxalin-2-(3H)-ones and related compounds |
US4188389A (en) * | 1978-11-03 | 1980-02-12 | Ayerst Mckenna & Harrison, Inc. | 1,2,3,4-Tetrahydropyrrolo(1,2-A)pyrazines |
US4230856A (en) * | 1978-07-26 | 1980-10-28 | Skoldinov Alexandr P | 1,2,3,4-Tetrahydropyrrolo-[1,2-a]-pyrazine |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3891643A (en) * | 1972-05-15 | 1975-06-24 | American Home Prod | Pyrrolo{8 1,2,3-de{9 quinoxalin-2-(3H)-ones and related compounds |
US4230856A (en) * | 1978-07-26 | 1980-10-28 | Skoldinov Alexandr P | 1,2,3,4-Tetrahydropyrrolo-[1,2-a]-pyrazine |
US4188389A (en) * | 1978-11-03 | 1980-02-12 | Ayerst Mckenna & Harrison, Inc. | 1,2,3,4-Tetrahydropyrrolo(1,2-A)pyrazines |
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