ES8606333A1 - Piperidine-di:one derivs. prepn. - Google Patents
Piperidine-di:one derivs. prepn.Info
- Publication number
- ES8606333A1 ES8606333A1 ES550086A ES550086A ES8606333A1 ES 8606333 A1 ES8606333 A1 ES 8606333A1 ES 550086 A ES550086 A ES 550086A ES 550086 A ES550086 A ES 550086A ES 8606333 A1 ES8606333 A1 ES 8606333A1
- Authority
- ES
- Spain
- Prior art keywords
- piperidine
- derivs
- dione
- pyridyl
- reacting
- 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
Landscapes
- Hydrogenated Pyridines (AREA)
Abstract
2,6-Piperidine-dione derivs. of formula (I), in which R1 and R2 are 1-4C alkyl, n is 2 or 3 and Het is 2-pyridyl or 2-pyrimidyl are made by (a) reacting 4,4-dialkyl 2,6-piperidine dione with a 1,4-dihalo-butane to give a halo-butyl piperidine dione (b) condensing this with ethylene diamine to give the amine (c) reacting with 2-pyridyl or 2-pyrimidyl chloride or bromide and (d) treating the prod. with an alkyl dihalide of formula Hal-(CH2)n-Hal to obtain (I) and its addn. salts with mineral acids.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES550086A ES8606333A1 (en) | 1985-12-18 | 1985-12-18 | Piperidine-di:one derivs. prepn. |
PT83567A PT83567B (en) | 1985-12-18 | 1986-10-17 | A novel process for the preparation of 2,6-pyridinedione derivatives |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES550086A ES8606333A1 (en) | 1985-12-18 | 1985-12-18 | Piperidine-di:one derivs. prepn. |
Publications (2)
Publication Number | Publication Date |
---|---|
ES8606333A1 true ES8606333A1 (en) | 1986-04-01 |
ES550086A0 ES550086A0 (en) | 1986-04-01 |
Family
ID=8490476
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES550086A Expired ES8606333A1 (en) | 1985-12-18 | 1985-12-18 | Piperidine-di:one derivs. prepn. |
Country Status (2)
Country | Link |
---|---|
ES (1) | ES8606333A1 (en) |
PT (1) | PT83567B (en) |
-
1985
- 1985-12-18 ES ES550086A patent/ES8606333A1/en not_active Expired
-
1986
- 1986-10-17 PT PT83567A patent/PT83567B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ES550086A0 (en) | 1986-04-01 |
PT83567B (en) | 1988-10-14 |
PT83567A (en) | 1986-11-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19970401 |