Dimethylformamide → 2-(5-chloro-2-oxo-1,3-benzoxazol-3(2H)-yl)-N-({5,6-dichloro-1-[2-(methoxymethoxy)ethyl]-1H-benzimidazol-2-yl}methyl)-N-methylacetamide

HRID 1428403Notes

Reaction equation

HRID 1428403 reaction equation
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[O:9][C:8](=[O:10])[N:7]([CH2:11][C:12]([N:14]([CH2:16][C:17]3[NH:21][C:20]4[CH:22]=[C:23]([Cl:27])[C:24]([Cl:26])=[CH:25][C:19]=4[N:18]=3)[CH3:15])=[O:13])[C:6]=2[CH:28]=1.CN(C=O)C.C([O-])([O-])=O.[K+].[K+].Br[CH2:41][CH2:42][O:43][CH2:44][O:45][CH3:46]>CCOC(C)=O>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[O:9][C:8](=[O:10])[N:7]([CH2:11][C:12]([N:14]([CH2:16][C:17]3[N:18]([CH2:41][CH2:42][O:43][CH2:44][O:45][CH3:46])[C:19]4[CH:25]=[C:24]([Cl:26])[C:23]([Cl:27])=[CH:22][C:20]=4[N:21]=3)[CH3:15])=[O:13])[C:6]=2[CH:28]=1

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 33310511-Bromo-2-(methoxymethoxy)ethaneHCID 1176525702-(5-chloro-2-oxo-1,3-benzoxazol-3 (2H)-yl)-N-[(5,6-dichloro-1H-benzimidazol-2-yl)methyl]-N-methylacetamide

Product 1

HCID 1176525882-(5-chloro-2-oxo-1,3-benzoxazol-3(2H)-yl)-N-({5,6-dichloro-1-[2-(methoxymethoxy)ethyl]-1H-benzimidazol-2-yl}methyl)-N-methylacetamide

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Conditions

Temperature
70 °C

Procedure

To a mixture of 2-(5-chloro-2-oxo-1,3-benzoxazol-3(2H)-yl)-N-[(5,6-dichloro-1H-benzimidazol-2-yl)methyl]-N-methylacetamide (150 mg) and DMF (4.5 mL) were added K2CO3 (94 mg) and 1-bromo-2-(methoxymethoxy)ethane (80 μL), followed by heating and stirring at 70° C. for 5 hours. The reaction mixture was cooled to room temperature and then diluted with EtOAc. The organic layer was washed with water and brine in this order, dried over MgSO4, and then concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluent: Hex/EtOAc=50/50-0/100) to obtain 2-(5-chloro-2-oxo-1,3-benzoxazol-3(2H)-yl)-N-({5,6-dichloro-1-[2-(methoxymethoxy)ethyl]-1H-benzimidazol-2-yl}methyl)-N-methylacetamide (110 mg).

Workup

  1. temperatureby heating
  2. temperatureThe reaction mixture was cooled to room temperature
  3. washThe organic layer was washed with water and brine in this order
  4. dry with materialdried over MgSO4
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was purified by silica gel column chromatography (eluent: Hex/EtOAc=50/50-0/100)

Sources & evidence

ORD record
ord-554500ec518845d29f0d8a6299990982
Source dataset
uspto-grants-2015_01
Patent number
US08937087B2

Reaction notes

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