Methyl iodide → HCID 58541893, compound

HRID 1966734Notes

Reaction equation

HRID 1966734 reaction equation
[Br:1][C:2]1[CH:25]=[CH:24][C:5]2[N:6]([C:20]([CH3:23])([CH3:22])[CH3:21])[C:7]([C:9]3[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=3[C:15]3[N:16]=[N:17][NH:18][N:19]=3)=[N:8][C:4]=2[CH:3]=1.IC.[C:28]([O-])([O-])=O.[K+].[K+]>CN(C=O)C.CCOC(C)=O>[Br:1][C:2]1[CH:25]=[CH:24][C:5]2[N:6]([C:20]([CH3:22])([CH3:21])[CH3:23])[C:7]([C:9]3[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=3[C:15]3[N:16]=[N:17][N:18]([CH3:28])[N:19]=3)=[N:8][C:4]=2[CH:3]=1

Participants

6

Reactant 3

HCID 6328Methyl iodideHCID 11430Potassium CarbonateHCID 58541950HCID 58541950, compound

Product 1

HCID 58541893HCID 58541893, compoundYield 38%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a vial is added 5-bromo-1-tert-butyl-2-[2-(2H-tetrazol-5-yl)-phenyl]-1H-benzimidazole (158 mg, 0.4 mmol) in DMF (5 mL), followed by the addition of iodomethane (114 mg, 0.8 mmol) and K2CO3 (110 mg, 0.8 mmol). The reaction mixture is stirred at room temperature for 0.5 hour. The reaction mixture is diluted with EtOAc, washed with water then, brine, dried with Na2SO4, filtered and concentrated. The residue is loaded to a silica gel column. The column is eluted with 0-3% MeOH/CH2Cl2. The product fractions are collected and is concentrated to afford 5-bromo-1-tert-butyl-2-[2-(2-methyl-2H-tetrazol-5-yl)-phenyl]-1H-benzimidazole (62 mg, 38%). LCMS (ESMS): m/z 411.59, 413.47 (M++1)

Workup

  1. washwashed with water
  2. dry with materialbrine, dried with Na2SO4
  3. filtrationfiltered
  4. concentrationconcentrated
  5. washThe column is eluted with 0-3% MeOH/CH2Cl2
  6. customThe product fractions are collected
  7. concentrationis concentrated

Sources & evidence

ORD record
ord-d2a3c07509164658b7a699539aa50083
Source dataset
uspto-grants-2013_04
Patent number
US08420655B2

Reaction notes

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