Pyridine, 4-(4,5-dimethyl-4H-1,2,4-triazol-3-yl)- → 4-(5-{2-[5-(3-Chloro-phenyl)-[1,2,4]oxadiazol-3-yl]-propyl}-4-methyl-4H-[1,2,4]triazol-3-yl)-pyridine

HRID 732078Notes

Reaction equation

HRID 732078 reaction equation
[Li]CCCC.[CH3:6][N:7]1[C:11]([CH3:12])=[N:10][N:9]=[C:8]1[C:13]1[CH:18]=[CH:17][N:16]=[CH:15][CH:14]=1.Br[CH:20]([C:22]1[N:26]=[C:25]([C:27]2[CH:32]=[CH:31][CH:30]=[C:29]([Cl:33])[CH:28]=2)[O:24][N:23]=1)[CH3:21]>C1COCC1>[Cl:33][C:29]1[CH:28]=[C:27]([C:25]2[O:24][N:23]=[C:22]([CH:20]([CH3:21])[CH2:12][C:11]3[N:7]([CH3:6])[C:8]([C:13]4[CH:18]=[CH:17][N:16]=[CH:15][CH:14]=4)=[N:9][N:10]=3)[N:26]=2)[CH:32]=[CH:31][CH:30]=1

Participants

5

Reactant 3

HCID 11600754Pyridine, 4-(4,5-dimethyl-4H-1,2,4-triazol-3-yl)-HCID 578379313-(1-Bromo-ethyl)-5-(3-chloro-phenyl)-[1,2,4]oxadiazoleHCID 178418339Butyllithium

Product 1

HCID 596673664-(5-{2-[5-(3-Chloro-phenyl)-[1,2,4]oxadiazol-3-yl]-propyl}-4-methyl-4H-[1,2,4]triazol-3-yl)-pyridineYield 10%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

84 microl (0.21 mmol, 2.5 M) n-BuLi was added dropwise to a solution of 37 mg (0.21 mmol) 4-(4,5-dimethyl-4H-[1,2,4]triazol-3-yl)-pyridine in 2.1 ml THF at 0° C. After 20 min a solution of 60 mg (0.21 mmol) 3-(1-bromo-ethyl)-5-(3-chloro-phenyl)-[1,2,4]oxadiazole was added dropwise. The reaction mixture was allowed to reach room temperature and stirred over night. NH4Cl(sat) was added and the mixture was extracted twice with EtOAc. The organic phase was dried and concentrated. Flashchromatography (CH2Cl2/MeOH 20:1) afforded 7.7 mg (10%) of the desired product. 1H NMR (CDCl3), d (ppm): 1.57 (d, 3 H) 3.16 (m, 1 H) 3.38 (m, 1 H) 3.71 (s, 3 H) 3.84 (d, 1 H) 7.46 (t, 1 H) 7.55 (m, 1 H) 7.58 (m, 2 H) 7.98 (m, 1 H) 8.10 (t, 1 H) 8.77 (d, 2 H)

Workup

  1. customto reach room temperature
  2. extractionthe mixture was extracted twice with EtOAc
  3. customThe organic phase was dried
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-0786664720a34450b9455f73beab4487
Source dataset
uspto-grants-2009_09
Patent number
US07585881B2

Reaction notes

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