N'-(6-Chloropyridazin-3-yl)-2-(quinolin-6-yl)acetohydrazide → 6-((6-Chloro-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)methyl)quinoline

HRID 1892303

Reaction equation

HRID 1892303 reaction equation
[Cl:1][C:2]1[N:7]=[N:6][C:5]([NH:8][NH:9][C:10](=O)[CH2:11][C:12]2[CH:13]=[C:14]3[C:19](=[CH:20][CH:21]=2)[N:18]=[CH:17][CH:16]=[CH:15]3)=[CH:4][CH:3]=1>C(O)(=O)C>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[N:6]([C:10]([CH2:11][C:12]3[CH:13]=[C:14]4[C:19](=[CH:20][CH:21]=3)[N:18]=[CH:17][CH:16]=[CH:15]4)=[N:9][N:8]=2)[N:7]=1

Participants

3

Reactant 1

HCID 86652010N'-(6-Chloropyridazin-3-yl)-2-(quinolin-6-yl)acetohydrazide

Product 1

HCID 249683676-((6-Chloro-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)methyl)quinolineYield 53%

Reagents, catalysts & solvents 1

HCID 176Acetic AcidSolvent

Procedure

A solution of N′-(6-chloropyridazin-3-yl)-2-(quinolin-6-yl)acetohydrazide (8 g crude, 25.5 mmol) in 250 mL of acetic acid was heated at 50° C. for 5 h. After the reaction was complete, the solvent was evaporated and the residue was taken up in EtOAc. The formed solid (mainly dicyclohexyl urea) was filtered off and the filtrate was evaporated to afford the title compound as yellow solid (4 g, 53%). 1H-NMR (400 MHz, MeOH-d4) δ ppm 8.82 (d, 1H), 8.33 (d, 1H), 8.25 (d, 1H), 8.0 (d, 1H), 7.93 (s, 1H), 7.83 (d, 1H), 7.53 (m, 1H), 7.42 (d, 1H), 4.79 (s, 2H). LCMS (method B): [MH]+=296.0, tR=1.876 min.

Workup

  1. customthe solvent was evaporated
  2. filtrationThe formed solid (mainly dicyclohexyl urea) was filtered off
  3. customthe filtrate was evaporated

Sources & evidence

ORD record
ord-55a162630bb24c119dc8d38339224876
Source dataset
uspto-grants-2013_08
Patent number
US08507676B2

Linked notes

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