RO99335B1 - Procedeu pentru prepararea unor derivati de acid 1,5-difenilpirazol-3-carboxilic - Google Patents
Procedeu pentru prepararea unor derivati de acid 1,5-difenilpirazol-3-carboxilicInfo
- Publication number
- RO99335B1 RO99335B1 RO130140A RO13014087A RO99335B1 RO 99335 B1 RO99335 B1 RO 99335B1 RO 130140 A RO130140 A RO 130140A RO 13014087 A RO13014087 A RO 13014087A RO 99335 B1 RO99335 B1 RO 99335B1
- Authority
- RO
- Romania
- Prior art keywords
- formula
- general formula
- temperature
- description
- see
- Prior art date
Links
- JJMZLVASVSISLC-UHFFFAOYSA-N 1,5-diphenylpyrazole-3-carboxylic acid Chemical class C=1C=CC=CC=1N1N=C(C(=O)O)C=C1C1=CC=CC=C1 JJMZLVASVSISLC-UHFFFAOYSA-N 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title 1
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract 3
- 239000011541 reaction mixture Substances 0.000 abstract 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract 2
- KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 abstract 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 2
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Natural products OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 abstract 2
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 abstract 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 abstract 2
- 238000009835 boiling Methods 0.000 abstract 2
- -1 dipropilether Chemical compound 0.000 abstract 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 abstract 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 abstract 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 abstract 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 abstract 1
- 229960000583 acetic acid Drugs 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 230000002378 acidificating effect Effects 0.000 abstract 1
- 150000008064 anhydrides Chemical class 0.000 abstract 1
- DALDUXIBIKGWTK-UHFFFAOYSA-N benzene;toluene Chemical compound C1=CC=CC=C1.CC1=CC=CC=C1 DALDUXIBIKGWTK-UHFFFAOYSA-N 0.000 abstract 1
- 239000012362 glacial acetic acid Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 235000006408 oxalic acid Nutrition 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 238000010992 reflux Methods 0.000 abstract 1
- 239000001632 sodium acetate Substances 0.000 abstract 1
- 235000017281 sodium acetate Nutrition 0.000 abstract 1
- 229910000104 sodium hydride Inorganic materials 0.000 abstract 1
- 239000012312 sodium hydride Substances 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 abstract 1
- 239000008096 xylene Substances 0.000 abstract 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Inventia se refera la un procedeu pentru prepararea unor derivati de acid 1,5-difenilpirazol-3-carboxilic cu formula generala I: (vezi formula în descriere) prin tratarea acetofenonei cu formula generala II: (vezi formula în descriere) într-un solvent selectionat dintr-o grupa ce cuprinde metanol, etanol, acetona, metilcetona, dioxan, dipropileter, tetrahidrofuran, benzen toluen sau xilen, în prezenta de metilat de sodiu sau hidrura de sodiu drept baza, la o temperatura de 0 degree C si punctul de fierbere al amestecului de reactie, cu o cantitate achimolara dintr-un diester de acid oxalic de formula III: (vezi formula în descriere) în care R are semnificatia indicata mai sus si se trateaza acidul benzoibentartric rezultat, cu formula generala IV: (vezi formula în descriere) în care Ra, R1 si n au semnificatiile de mai sus în prezenta de acid acetid glacial si acetat de sodiu, la o temperatura între temperatura camerei si punctul de fierbere al amestecului de reactie, cu o cantitate echimolara de fenilhidrazida cu formula generala V: (vezi formula în descriere) în care Rb si n au semnificatiile de mai sus si apoi amestecurile de reactie este ciclizat în mediu de acid la temperatura de reflux.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO130140A RO99335B1 (ro) | 1987-10-19 | 1987-10-19 | Procedeu pentru prepararea unor derivati de acid 1,5-difenilpirazol-3-carboxilic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO130140A RO99335B1 (ro) | 1987-10-19 | 1987-10-19 | Procedeu pentru prepararea unor derivati de acid 1,5-difenilpirazol-3-carboxilic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RO99335B1 true RO99335B1 (ro) | 1990-10-30 |
Family
ID=40907410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO130140A RO99335B1 (ro) | 1987-10-19 | 1987-10-19 | Procedeu pentru prepararea unor derivati de acid 1,5-difenilpirazol-3-carboxilic |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO99335B1 (ro) |
-
1987
- 1987-10-19 RO RO130140A patent/RO99335B1/ro unknown
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