ES232836A1 - Procedure for the obtaining of derivatives of 3,5-dicetopirazolidina (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure for the obtaining of derivatives of 3,5-dicetopirazolidina (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES232836A1 ES232836A1 ES0232836A ES232836A ES232836A1 ES 232836 A1 ES232836 A1 ES 232836A1 ES 0232836 A ES0232836 A ES 0232836A ES 232836 A ES232836 A ES 232836A ES 232836 A1 ES232836 A1 ES 232836A1
- Authority
- ES
- Spain
- Prior art keywords
- formula
- alkyl
- meaning
- hydrazine
- see formula
- 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
- 238000000034 method Methods 0.000 title abstract 2
- 125000002252 acyl group Chemical group 0.000 abstract 6
- OAKJQQAXSVQMHS-UHFFFAOYSA-N hydrazine Substances NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 abstract 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical group [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 4
- 229910052739 hydrogen Inorganic materials 0.000 abstract 4
- 239000001257 hydrogen Substances 0.000 abstract 4
- 125000000217 alkyl group Chemical group 0.000 abstract 3
- 239000007795 chemical reaction product Substances 0.000 abstract 3
- 229910052736 halogen Inorganic materials 0.000 abstract 2
- 150000002367 halogens Chemical class 0.000 abstract 2
- 150000002429 hydrazines Chemical class 0.000 abstract 2
- QDHHCQZDFGDHMP-UHFFFAOYSA-N Chloramine Chemical compound ClN QDHHCQZDFGDHMP-UHFFFAOYSA-N 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 125000002877 alkyl aryl group Chemical group 0.000 abstract 1
- 125000003710 aryl alkyl group Chemical group 0.000 abstract 1
- 125000003118 aryl group Chemical group 0.000 abstract 1
- 150000007857 hydrazones Chemical class 0.000 abstract 1
- 150000002690 malonic acid derivatives Chemical class 0.000 abstract 1
- DNTVKOMHCDKATN-UHFFFAOYSA-N pyrazolidine-3,5-dione Chemical class O=C1CC(=O)NN1 DNTVKOMHCDKATN-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Hydrogenated Pyridines (AREA)
- Plural Heterocyclic Compounds (AREA)
Abstract
Process for obtaining 3,5-diketopyrazolidine derivatives of the formula I ** (See formula) ** where R 1 signifies hydrogen or an alkyl or acyl residue, R 2 an alkyl radical and R 3 and R 4 alkyl, aryl, aralkyl, alkaryl or cycloalkyl radicals, characterized in that an (N-alkyl-piperidyl4) -hydrazine of the formula II is obtained ** (See formula) ** where R1 and R2 have the meaning described above, a) condensing a hydrazine derivative of formula III ** (See formula) ** where R has the meaning described above and X means hydrogen or an acyl residue, but where R1 and X can not both be hydrogen or both acyl residues, with an N-alkyl-4-piperidone of formula IV ** (See formula) ** where R2 has the meaning indicated above, and the hydrazone thus obtained, which in the case of representing R1 an alkyl group and X hydrogen can be acylated, if necessary in a known manner, is reduced and the reaction product is dissociated if necessary an optionally existing acyl group, or b) hydrazine or a hydrazine derivative of the formula III is reacted with a 4-halogen-N-alkylpiperidine of the formula V ** (See formula) ** where R2 has the above-mentioned meaning and Hal means a halogen, and the acyl group, if any, is dissociated from the reaction product or c) chloroamine is reacted with a 4-amino-n-alkylpiperidine of formula VI ** (See formula) ** wherein R2 has the above-indicated meaning, and the reaction product, if appropriate, is acylated or alkylated, and the hydrazine of the formula II obtained therefrom is reacted with a malonic acid derivative of the formula VII ** (See formula) ** where R3 and R4 have the meaning indicated above and Y and Z represent halogen, an -O-alkyl group, -NH2 or the acid group, after which an existing acyl group is dissociated, if appropriate. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (12)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH2864256 | 1956-01-07 | ||
| CH2968256 | 1956-02-08 | ||
| CH3262656 | 1956-04-26 | ||
| CH3380356 | 1956-05-31 | ||
| CH3461756 | 1956-06-22 | ||
| CH3787756 | 1956-09-27 | ||
| CH3787656 | 1956-09-27 | ||
| CH3793156 | 1956-09-28 | ||
| CH3895456A CH372058A (en) | 1956-01-07 | 1956-10-26 | Process for the preparation of the hitherto unknown 1- (N-methyl-piperidyl-4 ') -3,5-diketo-4,4-dimethyl-pyrazolidine |
| CH3988756 | 1956-11-22 | ||
| CH4007156A CH372059A (en) | 1956-01-07 | 1956-11-28 | Process for the preparation of new 3,5-diketopyrazolidines |
| CH4007256 | 1956-11-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES232836A1 true ES232836A1 (en) | 1957-10-16 |
Family
ID=38526755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES0232836A Expired ES232836A1 (en) | 1956-01-07 | 1957-01-05 | Procedure for the obtaining of derivatives of 3,5-dicetopirazolidina (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES232836A1 (en) |
-
1957
- 1957-01-05 ES ES0232836A patent/ES232836A1/en not_active Expired
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