(Diethylamino)sulfur trifluoride → 1-[5-fluoromethyl-1-(3-methyl-butyl)-1H-benzoimidazol-2-ylmethyl]-3-isopropyl-1,3-dihydro-benzoimidazol-2-one

HRID 896311Notes

Reaction equation

HRID 896311 reaction equation
O[CH2:2][C:3]1[CH:30]=[CH:29][C:6]2[N:7]([CH2:24][CH2:25][CH:26]([CH3:28])[CH3:27])[C:8]([CH2:10][N:11]3[C:15]4[CH:16]=[CH:17][CH:18]=[CH:19][C:14]=4[N:13]([CH:20]([CH3:22])[CH3:21])[C:12]3=[O:23])=[N:9][C:5]=2[CH:4]=1.CCN(S(F)(F)[F:37])CC>C(Cl)Cl>[F:37][CH2:2][C:3]1[CH:30]=[CH:29][C:6]2[N:7]([CH2:24][CH2:25][CH:26]([CH3:28])[CH3:27])[C:8]([CH2:10][N:11]3[C:15]4[CH:16]=[CH:17][CH:18]=[CH:19][C:14]=4[N:13]([CH:20]([CH3:22])[CH3:21])[C:12]3=[O:23])=[N:9][C:5]=2[CH:4]=1

Participants

4

Reactant 2

HCID 123472(Diethylamino)sulfur trifluorideHCID 208140091-[5-hydroxymethyl-1-(3-methyl-butyl)-1H-benzoimidazol-2-ylmethyl]-3-isopropyl-1,3-dihydro-benzoimidazol-2-one

Product 1

HCID 208140081-[5-fluoromethyl-1-(3-methyl-butyl)-1H-benzoimidazol-2-ylmethyl]-3-isopropyl-1,3-dihydro-benzoimidazol-2-oneYield 78.3%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of 1-[5-hydroxymethyl-1-(3-methyl-butyl)-1H-benzoimidazol-2-ylmethyl]-3-isopropyl-1,3-dihydro-benzoimidazol-2-one (41 mg, 0.10 mmol) in DCM (1 mL) was added DAST (32 mg, 0.20 mmol) at 0° C. The final solution was stirred at ambient temperature for 12 h then washed with sat. NaHCO3 and brine. The organic layer was dried over MgSO4 and evaporated. The residue was purified by slash chromatography (hexanes:EtOAc 2:1 to 1:1) to give 32 mg (78%) of 1-[5-fluoromethyl-1-(3-methyl-butyl)-1H-benzoimidazol-2-ylmethyl]-3-isopropyl-1,3-dihydro-benzoimidazol-2-one as a white solid.

Workup

  1. washthen washed with sat. NaHCO3 and brine
  2. dry with materialThe organic layer was dried over MgSO4
  3. customevaporated
  4. customThe residue was purified by slash chromatography (hexanes:EtOAc 2:1 to 1:1)

Sources & evidence

ORD record
ord-2aedb9f0522847958c1b25133c428cd0
Source dataset
uspto-grants-2005_07
Patent number
US06919331B2

Reaction notes

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