Methanesulfonyl chloride → 4-[4-(3-Chloro-4-fluoro-phenyl)-1-(2-methanesulfonyloxy-ethyl)-1H-imidazol-2-yl]-piperidine-1-carboxylic acid tert-butyl ester

HRID 1685146Notes

Reaction equation

HRID 1685146 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([C:14]2[N:15]([CH2:27][CH2:28][OH:29])[CH:16]=[C:17]([C:19]3[CH:24]=[CH:23][C:22]([F:25])=[C:21]([Cl:26])[CH:20]=3)[N:18]=2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH3:30][S:31](Cl)(=[O:33])=[O:32]>C(Cl)Cl>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([C:14]2[N:15]([CH2:27][CH2:28][O:29][S:31]([CH3:30])(=[O:33])=[O:32])[CH:16]=[C:17]([C:19]3[CH:24]=[CH:23][C:22]([F:25])=[C:21]([Cl:26])[CH:20]=3)[N:18]=2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

4

Reactant 2

HCID 31297Methanesulfonyl chlorideHCID 672649094-[4-(3-Chloro-4-fluoro-phenyl)-1-(2-hydroxy-ethyl)-1H-imidazol-2-yl]-piperidine-1-carboxylic acid tert-butyl ester

Product 1

HCID 866415984-[4-(3-Chloro-4-fluoro-phenyl)-1-(2-methanesulfonyloxy-ethyl)-1H-imidazol-2-yl]-piperidine-1-carboxylic acid tert-butyl esterYield 104%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Suspend 4-[4-(3-chloro-4-fluoro-phenyl)-1-(2-hydroxy-ethyl)-1H-imidazol-2-yl]-piperidine-1-carboxylic acid tert-butyl ester (5.07 g; 11.96 mmol) and TEA (35.88 mmol; 5.0 mL) in DCM (50 mL) and cool in ice bath. Add methanesulfonyl chloride (14.35 mmol; 1.1 mL) dropwise over 9 min and stir for 30 additional min. Quench with saturated sodium bicarbonate, dry over MgSO4, filter and evaporate to provide the title compound (6.246 g; 104%) as a foam. MS (ES): m/z=502 (M+H).

Workup

  1. temperaturecool in ice bath
  2. customQuench with saturated sodium bicarbonate
  3. dry with materialdry over MgSO4
  4. filtrationfilter
  5. customevaporate

Sources & evidence

ORD record
ord-72b551254bab4a5ca78d229b365b1a27
Source dataset
uspto-grants-2012_04
Patent number
US08148387B2

Reaction notes

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