N-Methylhydrazinecarbothioamide → N-Ethyl-N-[3-[3-(methylamino)-1,2,4-triazolo[4,3-b]pyridazin-6-yl]phenyl]-propanamide

HRID 35656

Reaction equation

HRID 35656 reaction equation
[CH2:1]([N:3]([C:8]1[CH:13]=[CH:12][CH:11]=[C:10]([C:14]2[N:15]=[N:16][C:17](Cl)=[CH:18][CH:19]=2)[CH:9]=1)[C:4](=[O:7])[CH2:5][CH3:6])[CH3:2].[CH3:21][NH:22][C:23](=S)[NH:24][NH2:25]>C(O)C>[CH2:1]([N:3]([C:8]1[CH:13]=[CH:12][CH:11]=[C:10]([C:14]2[CH:19]=[CH:18][C:17]3[N:16]([C:23]([NH:22][CH3:21])=[N:24][N:25]=3)[N:15]=2)[CH:9]=1)[C:4](=[O:7])[CH2:5][CH3:6])[CH3:2]

Participants

4

Reactant 2

HCID 2723853N-MethylhydrazinecarbothioamideHCID 14280299N-ethyl-N-[3-(6-chloro-3-pyridazinyl)phenyl]propanamide

Product 1

HCID 15595697N-Ethyl-N-[3-[3-(methylamino)-1,2,4-triazolo[4,3-b]pyridazin-6-yl]phenyl]-propanamideYield 8.9%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

A solution of 5.0 g N-ethyl-N[3-(6-chloro-3-pyridazinyl)phenyl]propanamide and 3.8 g of 4-methylthiosemicarbazide in 200 ml ethanol was refluxed for 18 hours. The mixture was then treated and the product chromatographed as described for Example 70. Recrystallization of the product from acetone-hexane afforded 0.5 g orange crystals, mp 172°-173° C.

Workup

  1. additionThe mixture was then treated
  2. customthe product chromatographed
  3. customRecrystallization of the product from acetone-hexane

Sources & evidence

ORD record
ord-58dcf99801004d4eb418f083e5e24d1a
Source dataset
uspto-grants-1988_08
Patent number
US04767765

Linked notes

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