Water → 2-(4-Chloro-phenyl)-4-fluoromethyl-1-(4-methanesulfonyl-phenyl)-1H-imidazole

HRID 1353006Notes

Reaction equation

HRID 1353006 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[N:9]([C:15]3[CH:20]=[CH:19][C:18]([S:21]([CH3:24])(=[O:23])=[O:22])=[CH:17][CH:16]=3)[CH:10]=[C:11]([CH2:13]O)[N:12]=2)=[CH:4][CH:3]=1.C(N(S(F)(F)[F:31])CC)C.O>ClCCl>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[N:9]([C:15]3[CH:20]=[CH:19][C:18]([S:21]([CH3:24])(=[O:23])=[O:22])=[CH:17][CH:16]=3)[CH:10]=[C:11]([CH2:13][F:31])[N:12]=2)=[CH:4][CH:3]=1

Participants

5

Reactant 3

HCID 962WaterHCID 123472(Diethylamino)sulfur trifluorideHCID 108325102-(4-chlorophenyl)-1-[4-(methylsulfonyl)phenyl]-1H-imidazole-4-methanol

Product 1

HCID 117931882-(4-Chloro-phenyl)-4-fluoromethyl-1-(4-methanesulfonyl-phenyl)-1H-imidazole

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

To a suspension of 2-(4-chlorophenyl)-1-[4-(methylsulfonyl)phenyl]-1H-imidazole-4-methanol (Example 158) (250 mg, 0.689 mmole) in 5 ml of dichloromethane was added dropwise a solution of diethylamino sulfur trifluoride (DAST) (166 mg, 1.03 mmole) in 1 ml of dichloromethane. As the addition proceeded, the mixture became homogeneous. After stirring for two hours, water was added, the layers separated and the aqueous layer was extracted with dichloromethane. The combined organic extracts were dried over sodium sulfate, filtered and evaporated. Chromatography of the residue over silica gel using 60% ethyl acetate in hexane gave the title compound as a very slightly yellow solid (106 mg): mp (DSC) 165° C. Anal. Calc'd. for C17H14ClFN2O2S.¼H2O (MW 369.33): C, 55.29; H, 3.82; N, 7.59. Found: C, 55.15; H, 3.82; N, 7.42.

Workup

  1. additionAs the addition
  2. customthe layers separated
  3. extractionthe aqueous layer was extracted with dichloromethane
  4. dry with materialThe combined organic extracts were dried over sodium sulfate
  5. filtrationfiltered
  6. customevaporated

Sources & evidence

ORD record
ord-43e10b6d8d9d44b09b553d1e5bc216aa
Source dataset
uspto-grants-2007_05
Patent number
US07220770B2

Reaction notes

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