BE724325A - - Google Patents
Info
- Publication number
- BE724325A BE724325A BE724325DA BE724325A BE 724325 A BE724325 A BE 724325A BE 724325D A BE724325D A BE 724325DA BE 724325 A BE724325 A BE 724325A
- Authority
- BE
- Belgium
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D295/00—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
- C07D295/02—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms containing only hydrogen and carbon atoms in addition to the ring hetero elements
- C07D295/023—Preparation; Separation; Stabilisation; Use of additives
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/582—Recycling of unreacted starting or intermediate materials
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19671670288 DE1670288A1 (de) | 1967-11-24 | 1967-11-24 | Verfahren zur Herstellung von N-Methylpiperazin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE724325A true BE724325A (xx) | 1969-05-22 |
Family
ID=5686306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE724325D BE724325A (xx) | 1967-11-24 | 1968-11-22 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3607874A (xx) |
| AT (1) | AT283373B (xx) |
| BE (1) | BE724325A (xx) |
| CH (1) | CH497435A (xx) |
| FR (1) | FR1592964A (xx) |
| GB (1) | GB1238478A (xx) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109897014A (zh) * | 2019-04-17 | 2019-06-18 | 成都睿智化学研究有限公司 | 一种1-（取代苯基）-4-甲基哌嗪的工艺制备方法 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3725925A1 (de) * | 1987-08-05 | 1989-02-16 | Basf Ag | Verfahren zur gewinnung von n-ethylpiperazin |
| US5245032A (en) * | 1990-09-20 | 1993-09-14 | Union Carbide Chemicals & Plastics Technology Corporation | Catalytic processes for the preparation of n,n,n-trisubstituted nitrogen-containing compounds |
| US5414087A (en) * | 1993-07-07 | 1995-05-09 | Huntsman Corporation | Preparation of N-alkylpiperazines |
| CN104230850B (zh) * | 2013-06-17 | 2016-04-13 | 中国石油化工股份有限公司 | 哌嗪的分离方法 |
-
1968
- 1968-11-18 AT AT1119068A patent/AT283373B/de not_active IP Right Cessation
- 1968-11-21 US US777886A patent/US3607874A/en not_active Expired - Lifetime
- 1968-11-22 BE BE724325D patent/BE724325A/xx unknown
- 1968-11-22 CH CH1742368A patent/CH497435A/de not_active IP Right Cessation
- 1968-11-22 GB GB1238478D patent/GB1238478A/en not_active Expired
- 1968-11-25 FR FR1592964D patent/FR1592964A/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109897014A (zh) * | 2019-04-17 | 2019-06-18 | 成都睿智化学研究有限公司 | 一种1-（取代苯基）-4-甲基哌嗪的工艺制备方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CH497435A (de) | 1970-10-15 |
| GB1238478A (xx) | 1971-07-07 |
| US3607874A (en) | 1971-09-21 |
| FR1592964A (xx) | 1970-05-19 |
| AT283373B (de) | 1970-08-10 |