Benzophenone imine → N-(diphenylmethylidene)-4-[(1-methyl-1H-benzimidazol-2-yl)oxy]aniline

HRID 1044267Notes

Reaction equation

HRID 1044267 reaction equation
Br[C:2]1[CH:18]=[CH:17][C:5]([O:6][C:7]2[N:11]([CH3:12])[C:10]3[CH:13]=[CH:14][CH:15]=[CH:16][C:9]=3[N:8]=2)=[CH:4][CH:3]=1.CC(C)([O-])C.[Na+].CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2.[C:67](=[NH:80])([C:74]1[CH:79]=[CH:78][CH:77]=[CH:76][CH:75]=1)[C:68]1[CH:73]=[CH:72][CH:71]=[CH:70][CH:69]=1>O1CCOCC1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].O>[C:74]1([C:67]([C:68]2[CH:69]=[CH:70][CH:71]=[CH:72][CH:73]=2)=[N:80][C:2]2[CH:18]=[CH:17][C:5]([O:6][C:7]3[N:11]([CH3:12])[C:10]4[CH:13]=[CH:14][CH:15]=[CH:16][C:9]=4[N:8]=3)=[CH:4][CH:3]=2)[CH:75]=[CH:76][CH:77]=[CH:78][CH:79]=1

Participants

8

Reactant 4

HCID 136809Benzophenone imineHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 23676156Sodium t-butoxideHCID 58577454HCID 58577454, compound

Product 1

HCID 58577298N-(diphenylmethylidene)-4-[(1-methyl-1H-benzimidazol-2-yl)oxy]aniline

Reagents, catalysts & solvents 3

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 962WaterSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
100 °C

Procedure

To a suspension of 2-(4-bromophenoxy)-1-methyl-1H-benzimidazole (1.0 g), Pd2(dba)3 (0.076 g), sodium tert-butoxide (0.48 g) and xantphos (0.19 g) in dioxane (10 mL) was added benzophenone imine (0.83 ml), and the mixture was stirred at 100° C. under Ar atmosphere for 6 h. After stirring at room temperature overnight, the mixture was poured into water, and the mixture was extracted with AcOEt. The organic layer was dried over Na2SO4, filtered and concentrated in vacuo. The residual crystals were washed with AcOEt to obtain N-(diphenylmethylidene)-4-[(1-methyl-1H-benzimidazol-2-yl)oxy]aniline (0.81 g) as pale yellow crystals.

Workup

  1. stirringAfter stirring at room temperature overnight
  2. extractionthe mixture was extracted with AcOEt
  3. dry with materialThe organic layer was dried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. washThe residual crystals were washed with AcOEt

Sources & evidence

ORD record
ord-3300dfed8a9943f4bd490eb390ea4e84
Source dataset
uspto-grants-2013_10
Patent number
US08563575B2

Reaction notes

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