GB836289A - Two-stage method for preparing carbon-substituted piperazines - Google Patents
Two-stage method for preparing carbon-substituted piperazinesInfo
- Publication number
- GB836289A GB836289A GB511758A GB511758A GB836289A GB 836289 A GB836289 A GB 836289A GB 511758 A GB511758 A GB 511758A GB 511758 A GB511758 A GB 511758A GB 836289 A GB836289 A GB 836289A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkyl
- stage method
- preparing carbon
- substituted piperazines
- exceed
- 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
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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D241/00—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings
- C07D241/02—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Catalysts (AREA)
Abstract
2(3) Piperazines of the formula <FORM:0836289/IV (b)/1> are obtained by heating and stirring or other wise agitating a mixture of a finely divided nickel hydrogenation/dehydrogenation catalyst and an N - (b - hydroxyalkyl) - 1:2 - alkylenediamine of the formula <FORM:0836289/IV (b)/2> wherein R1 and R2 are hydrogen or C1-3 alkyl radicals, provided R1 + R2 does not exceed C3, R3 is hydrogen or C1-2 alkyl and R4 is C1-3 alkyl, provided R3 + R4 does not exceed C3, said heating step being carried out in the liquid phase at about atmospheric pressure at a temperature in the range from 80 DEG to 125 DEG C. and for a time in the range from 2 to 8 hours, and subsequently distilling the total product of said heating step in the presence of said catalyst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB511758A GB836289A (en) | 1958-02-17 | 1958-02-17 | Two-stage method for preparing carbon-substituted piperazines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB511758A GB836289A (en) | 1958-02-17 | 1958-02-17 | Two-stage method for preparing carbon-substituted piperazines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB836289A true GB836289A (en) | 1960-06-01 |
Family
ID=9790028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB511758A Expired GB836289A (en) | 1958-02-17 | 1958-02-17 | Two-stage method for preparing carbon-substituted piperazines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB836289A (en) |
-
1958
- 1958-02-17 GB GB511758A patent/GB836289A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB836289A (en) | Two-stage method for preparing carbon-substituted piperazines | |
| GB924421A (en) | Aminosteroid compounds and process for their manufacture | |
| GB1456799A (en) | Preparation of 1-methylpiperazine and 1,4-dimethylpiperazine as co-products | |
| GB1046091A (en) | N-vinylamides and a process for preparing them | |
| GB947780A (en) | Heterocyclic boron compounds and a process for their production | |
| ES285658A1 (en) | Procedure for preparing racemic compounds derived from cyclopentilacetic acid (Machine-translation by Google Translate, not legally binding) | |
| ES425533A1 (en) | Dichlorothiazolylureas processes for their preparation and their use as herbicides | |
| GB930676A (en) | Process for the preparation of 20-alkylamino steroid derivatives and novel 20-alkylamino steroid derivatives prepared thereby | |
| GB555240A (en) | Improvements in and relating to the catalytic hydrogenation of organic compounds | |
| GB810332A (en) | Esters of amino acids | |
| GB749810A (en) | New derivatives of demethylcolchicine | |
| GB862868A (en) | Preparation of pyrrolidylmethyl alcohols | |
| GB845499A (en) | Improvements in and relating to aminoalkyl-and aminoaralkyl-cycloplutadecenyl iron compounds | |
| GB890603A (en) | Preparation of acetylenic alcohols | |
| GB826668A (en) | Process for manufacturing basic carboxamides | |
| GB650911A (en) | Improvements in or relating to 3-pyrazolidone compounds | |
| GB816037A (en) | Process for preparation of piperazine | |
| GB744851A (en) | Process for the production of primary amines | |
| GB880653A (en) | Improvements in the production of hydrazones of heterocyclic oxo compounds | |
| GB699547A (en) | Improvements relating to 1-dialkylcarbamyl-4-methyl piperazine mono-oxides | |
| GB895681A (en) | Improvements in the preparation of glycolonitrile | |
| GB854378A (en) | Process for the manufacture of piperazine | |
| ES233170A1 (en) | A procedure for the preparation of amidas of N-alkyl-tetrahydroquinaldinic acid (Machine-translation by Google Translate, not legally binding) | |
| GB769130A (en) | Process for the manufacture of substituted ureas | |
| ES279403A1 (en) | A procedure for the preparation of 10-alkenil-delta1,4-3-ceto-steroids (Machine-translation by Google Translate, not legally binding) |