ES408237A1 - 1,2-diphenyl-3,6-dioxo-4-hydroxy-5-n-butyl-tetrahydropyridazine - Google Patents
1,2-diphenyl-3,6-dioxo-4-hydroxy-5-n-butyl-tetrahydropyridazineInfo
- Publication number
- ES408237A1 ES408237A1 ES408237A ES408237A ES408237A1 ES 408237 A1 ES408237 A1 ES 408237A1 ES 408237 A ES408237 A ES 408237A ES 408237 A ES408237 A ES 408237A ES 408237 A1 ES408237 A1 ES 408237A1
- Authority
- ES
- Spain
- Prior art keywords
- oxalic acid
- tetrahydropyridazine
- dioxo
- diphenyl
- hydroxy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- VMQVFZJQGXNRMV-UHFFFAOYSA-N C1(=CC=CC=C1)N1N(C(C(C(C1=O)CCCC)O)=O)C1=CC=CC=C1 Chemical compound C1(=CC=CC=C1)N1N(C(C(C(C1=O)CCCC)O)=O)C1=CC=CC=C1 VMQVFZJQGXNRMV-UHFFFAOYSA-N 0.000 title abstract 2
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 abstract 9
- 235000006408 oxalic acid Nutrition 0.000 abstract 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- 150000002148 esters Chemical class 0.000 abstract 2
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 abstract 2
- 239000002904 solvent Substances 0.000 abstract 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 1
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 abstract 1
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000009833 condensation Methods 0.000 abstract 1
- 230000005494 condensation Effects 0.000 abstract 1
- 238000004821 distillation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000003960 organic solvent Substances 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
Landscapes
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Pyridine Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Procedure for the preparation of 1,2-diphenyl-3,6-dioxo-4-hydroxy-5-n-butyl-tetrahydropyridazine, characterized in that caproic acid N, N'-diphenylhydrazide is reacted with an amount of two to four times greater than the molar oxalic acid dialkylhydric ester in the presence of an alkaline condensing agent in an inert organic solvent, because the alcohol formed during condensation is continuously distilled off as an azeotrope together with a part of the solvent, and because after the completion of the reaction, without previous distillation separation of the remaining solvent, the excess ester of oxalic acid is transformed into diamide of oxalic acid by ammonia. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712155002 DE2155002A1 (en) | 1971-11-05 | 1971-11-05 | PROCESS FOR THE PREPARATION OF 1,2-DIPHENYL-3,6-DIOXO-4-HYDROXY-5-N-BUTYLTETRAHYDROPYRIDAZINE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES408237A1 true ES408237A1 (en) | 1975-11-16 |
Family
ID=5824281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES408237A Expired ES408237A1 (en) | 1971-11-05 | 1972-11-03 | 1,2-diphenyl-3,6-dioxo-4-hydroxy-5-n-butyl-tetrahydropyridazine |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS4854091A (en) |
| AR (1) | AR194854A1 (en) |
| AT (1) | AT318635B (en) |
| BE (1) | BE790923A (en) |
| DE (1) | DE2155002A1 (en) |
| ES (1) | ES408237A1 (en) |
| FR (1) | FR2159994A5 (en) |
| GB (1) | GB1354447A (en) |
| LU (1) | LU66408A1 (en) |
| NL (1) | NL7214865A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4180575A (en) | 1977-03-22 | 1979-12-25 | Hoechst Aktiengesellschaft | Triazolidino-pyridazine-diones |
-
0
- BE BE790923D patent/BE790923A/en unknown
-
1971
- 1971-11-05 DE DE19712155002 patent/DE2155002A1/en active Pending
-
1972
- 1972-02-02 JP JP1212772A patent/JPS4854091A/ja active Pending
- 1972-11-01 GB GB5036172A patent/GB1354447A/en not_active Expired
- 1972-11-02 AR AR24494572A patent/AR194854A1/en active
- 1972-11-02 AT AT931272A patent/AT318635B/en not_active IP Right Cessation
- 1972-11-03 ES ES408237A patent/ES408237A1/en not_active Expired
- 1972-11-03 LU LU66408D patent/LU66408A1/xx unknown
- 1972-11-03 FR FR7238903A patent/FR2159994A5/fr not_active Expired
- 1972-11-03 NL NL7214865A patent/NL7214865A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AR194854A1 (en) | 1973-08-24 |
| AT318635B (en) | 1974-11-11 |
| DE2155002A1 (en) | 1973-05-17 |
| JPS4854091A (en) | 1973-07-30 |
| LU66408A1 (en) | 1973-11-12 |
| BE790923A (en) | 1973-05-03 |
| GB1354447A (en) | 1974-06-05 |
| FR2159994A5 (en) | 1973-06-22 |
| NL7214865A (en) | 1973-05-08 |
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