Methanesulfonyl chloride → tert-butyl 4-(4-bromo-1-(2-((methylsulfonyl)oxy)ethyl)-1H-imidazol-2-yl)piperidine-1-carboxylate

HRID 1685167Notes

Reaction equation

[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([C:14]2[N:15]([CH2:20][CH2:21][OH:22])[CH:16]=[C:17]([Br:19])[N:18]=2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[S:23](Cl)([CH3:26])(=[O:25])=[O:24]>C(Cl)Cl>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([C:14]2[N:15]([CH2:20][CH2:21][O:22][S:23]([CH3:26])(=[O:25])=[O:24])[CH:16]=[C:17]([Br:19])[N:18]=2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

Conditions

Temperature: 0 °C

Procedure

Add 4-[4-bromo-1-(2-hydroxy-ethyl)-1H-imidazol-2-yl]-piperidine-1-carboxylic acid tert-butyl ester (10.0 g; 0.027 mol; 1.0 equiv), TEA (11.6 mL; 0.080 mol; 3.0 equiv) to DCM (150 mL) and cool to 0° C. Add drop-wise mesyl chloride (2.6 mL; 0.032 mol; 1.2 equiv) and stir for 30 min. Quench the reaction with saturated NaHCO3 aqueous and extract with DCM. Evaporate the organic layer to give the title compound (10.2 g; 84%).

Workup

customQuench
customthe reaction with saturated NaHCO3 aqueous
extractionextract with DCM
customEvaporate the organic layer

Sources & evidence

ORD record: ord-5826bf0a8b5f4bcc8f4faab344132833
Source dataset: uspto-grants-2012_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08148387B2

Reaction notes

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