Cesium carbonate → HCID 69671732, compound

HRID 1497567Notes

Reaction equation

HRID 1497567 reaction equation
Br[C:2]1[CH:3]=[CH:4][C:5]2[N:6]([C:8]([C:11]3[CH:16]=[CH:15][CH:14]=[CH:13][C:12]=3[O:17][CH3:18])=[N:9][N:10]=2)[CH:7]=1.[CH3:19][C:20]1[CH:25]=[CH:24][C:23](B(O)O)=[CH:22][CH:21]=1.C([O-])([O-])=O.[Cs+].[Cs+]>C1(C)C=CC=CC=1.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH3:18][O:17][C:12]1[CH:13]=[CH:14][CH:15]=[CH:16][C:11]=1[C:8]1[N:6]2[CH:7]=[C:2]([C:23]3[CH:24]=[CH:25][C:20]([CH3:19])=[CH:21][CH:22]=3)[CH:3]=[CH:4][C:5]2=[N:10][N:9]=1

Participants

7

Reactant 3

HCID 10796Cesium carbonateHCID 79799Tolylboronic acidHCID 68900619HCID 68900619, compound

Product 1

HCID 69671732HCID 69671732, compoundYield 86.3%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 1140TolueneSolvent

Procedure

To a solution of 6-bromo-3-(2-methoxyphenyl)-[1,2,4]triazolo[4,3-a]pyridine (100 mg, 0.329 mmol) in toluene (20 mL) and water (5 mL) was added 4-methylphenylboronic acid (67.1 mg, 0.493 mmol), Pd(PPh3)4 (18.4 mg, 0.016 mmol) and Cs2CO3 (55.3 mg, 0.658 mmol), and the reaction mixture was refluxed under Argon overnight. The mixture was filtered and the filtrate was washed with water (50 mL×2), dried over anhydrous Na2SO4 and concentrated to dryness. The residue was purified by column chromatography on silica gel (petroleum ether:ethyl acetate=1:1) to give the title compound (89.5 mg, 50.6% yield) as yellow solids. 1H NMR (DMSO-d6): 8.09 (m, 1H), 7.93 (dd, J=9.6 and 0.9 Hz, 1H), 7.77 (d, J=9.6 and 1.8 Hz, 1H), 7.64-7.58 (m, 4H), 7.33-7.28 (m, 3H), 7.19 (t, J=7.2 Hz, 1H), 3.85 (s, 3H), 2.35 (s, 3H). MS: m/z 316.2 [M+H+].

Workup

  1. temperaturethe reaction mixture was refluxed under Argon overnight
  2. filtrationThe mixture was filtered
  3. washthe filtrate was washed with water (50 mL×2)
  4. dry with materialdried over anhydrous Na2SO4
  5. concentrationconcentrated to dryness
  6. customThe residue was purified by column chromatography on silica gel (petroleum ether:ethyl acetate=1:1)

Sources & evidence

ORD record
ord-8790aa712bac45b5868f8ef6c5c99047
Source dataset
uspto-grants-2015_12
Patent number
US09199983B2

Reaction notes

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