DD233563A1 - PROCESS FOR THE PREPARATION OF DITHIOOXALIC ACID (1-ALKYLHYDRAZIDE) AMIDES - Google Patents
PROCESS FOR THE PREPARATION OF DITHIOOXALIC ACID (1-ALKYLHYDRAZIDE) AMIDES Download PDFInfo
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- DD233563A1 DD233563A1 DD27210784A DD27210784A DD233563A1 DD 233563 A1 DD233563 A1 DD 233563A1 DD 27210784 A DD27210784 A DD 27210784A DD 27210784 A DD27210784 A DD 27210784A DD 233563 A1 DD233563 A1 DD 233563A1
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- German Democratic Republic
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- alkylhydrazide
- amides
- preparation
- alkylhydrazines
- dithiooxalic acid
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Die Erfindung betrifft ein Verfahren zur Herstellung von Dithiooxalsaeure-(1-alkylhydrazid)-amiden. Ziel der Erfindung ist es, ein Verfahren zu finden, welches aus leicht und bequem zugaenglichen Ausgangsstoffen die Titelverbindungen herzustellen gestattet. Das Wesen der Erfindung besteht in der Umsetzung von Cyanodithioformiaten mit Alkylhydrazinen in C1-C4-Alkoholen oder Acetonitril.The invention relates to a process for the preparation of Dithiooxalsaeure- (1-alkylhydrazide) amides. The aim of the invention is to find a method which allows to produce the title compounds from easily and conveniently accessible starting materials. The essence of the invention consists in the reaction of Cyanodithioformiaten with alkylhydrazines in C1-C4 alcohols or acetonitrile.
Description
Die Erfindung betrifft ein Verfahren zur Herstellung von Dithiooxalsäure-(1-alkylhydrazid)-amiden durch Reaktion von Cyanodithioformiaten mit Alkylhydrazinen. Derartige Verbindungen haben Interesse als polyfunktionelle Synthesebausteine.The invention relates to a process for the preparation of dithiooxalic acid (1-alkylhydrazide) amides by reaction of cyanodithioformates with alkylhydrazines. Such compounds are of interest as polyfunctional synthesis building blocks.
Dithiooxalsäure-(1-alkylhydrazid)-amide sind bisher nicht bekanntgeworden. Ziel der ErfindungDithiooxalic acid (1-alkylhydrazide) amides have not previously been disclosed. Object of the invention
Ziel der Erfindung ist das Auffinden eines einfachen Verfahrens einer Herstellung von Dithiooxalsäure-(i-alkylhydrazid)-amiden aus technisch leicht zugänglichen Ausgangsstoffen.The aim of the invention is to find a simple process for preparing dithiooxalic acid (i-alkylhydrazide) amides from industrially readily available starting materials.
Die Aufgabe wird dadurch gelöst, daß Cyanodithioformiate, insbesondere das mit drei Mol Dimethylformamid solvatisierte Natriumsalz, mit Alkylhydrazinen umgesetzt werden.The object is achieved by reacting cyanodithioformates, in particular the sodium salt solvated with three moles of dimethylformamide, with alkylhydrazines.
Die Umsetzungen erfordern basisches Milieu und werden durch den Einsatz von überschüssigem Alkylhydrazin begünstigt.The reactions require basic environment and are favored by the use of excess alkylhydrazine.
Vorteilhafter ist es, das überschüssige Alkylhydrazin durch ein billigeres tertiäres Amin, z. B. Triethylamin, zu ersetzen.It is more advantageous, the excess alkylhydrazine by a cheaper tertiary amine, for. As triethylamine to replace.
Als Lösungsmittel eignen sich C1-C4-AIkOhOIe, vorzugsweise i-Butanol, oder Acetonitril. Die Reaktionskomponenten werden einige Stunden bei Raumtemperatur geschüttelt. Die ausgefallenen hellgelben Niederschläge werden abgetrennt, mit wenig Wasser und Ethanol gewaschen, getrocknet und umkristalliert.Suitable solvents are C 1 -C 4 -AlkOhOIe, preferably i-butanol, or acetonitrile. The reaction components are shaken for several hours at room temperature. The precipitated pale yellow precipitates are separated, washed with a little water and ethanol, dried and recrystallized.
0,1 Mol Natriumcyanodithioformiat 3MoI Dimethylformamid werden mit 0,1 mlMethylhydrazin,0,1 Mol Triethylamin in 100 ml i-Butanol 8 h bei RT geschüttelt. Der Niederschlag wird abgesaugt, mit Wasser und wenig Ethanol gewaschen. Nach dem Umkristallisieren aus Methanol erhält man hellgelbe Kristalle.0.1 mol of sodium cyanodithioformate 3MoI dimethylformamide are shaken with 0.1 ml of methylhydrazine, 0.1 mol of triethylamine in 100 ml of i-butanol for 8 h at RT. The precipitate is filtered off, washed with water and a little ethanol. After recrystallization from methanol gives pale yellow crystals.
Fp: 175-77° Ausbeute: 32%Mp: 175-77 ° yield: 32%
1H-NMR (80MHz, Aceton-D6, DMSO-D6) [ppm]: 3,41 (s, N-CH3); 1 H-NMR (80MHz, acetone-D6, DMSO-D6) [ppm]: 3.41 (s, N-CH 3);
6,41 (s, NH2); 9,25,9,94 (s, C(S)-NH2)6.41 (s, NH 2 ); 9,25,9,94 (s, C (S) -NH 2 )
MS (70 eV, m/e):149 (90, M+), 134 (19), 105 (52), 89 (14), 60 (100)MS (70 eV, m / e): 149 (90, M + ), 134 (19), 105 (52), 89 (14), 60 (100)
0,1 Mol Tetraethylammonium-cyanodithioformiat werden mit 0,1 ml Methylhydrazin in 100ml Acetonitril 2h bei Raumtemperatur geschüttelt und wie in Beispiel 1 aufgearbeitet0.1 mol of tetraethylammonium cyanodithioformiat are shaken with 0.1 ml of methylhydrazine in 100 ml of acetonitrile for 2 h at room temperature and worked up as in Example 1
Fp: 174-76° Ausbeute: 35% Mp: 174-76 ° Yield: 35%
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD27210784A DD233563A1 (en) | 1984-12-29 | 1984-12-29 | PROCESS FOR THE PREPARATION OF DITHIOOXALIC ACID (1-ALKYLHYDRAZIDE) AMIDES |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD27210784A DD233563A1 (en) | 1984-12-29 | 1984-12-29 | PROCESS FOR THE PREPARATION OF DITHIOOXALIC ACID (1-ALKYLHYDRAZIDE) AMIDES |
Publications (1)
Publication Number | Publication Date |
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DD233563A1 true DD233563A1 (en) | 1986-03-05 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DD27210784A DD233563A1 (en) | 1984-12-29 | 1984-12-29 | PROCESS FOR THE PREPARATION OF DITHIOOXALIC ACID (1-ALKYLHYDRAZIDE) AMIDES |
Country Status (1)
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DD (1) | DD233563A1 (en) |
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1984
- 1984-12-29 DD DD27210784A patent/DD233563A1/en not_active IP Right Cessation
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