Methanesulfonyl chloride → HCID 67346081, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 2,2-Dimethyl-1-[2-(4-piperazin-1-yl-phenyl)-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazin-7-yl]-propan-1-one (0.10 g, 0.203 mmol) in dichloromethane was added 0.042 mL of diisopropylethylamine (0.031 g, 0.244 mmol) and the reaction mixture was subsequently cooled to 0° C. Methane sulfonyl chloride (0.019 mL; 0.028 g, 0.244 mmol) was added via syringe and the reaction was slowly warmed to room temperature and stirred overnight. The reaction was quenched with water and extracted 3 times with dichloromethane. Combined organics were dried over MgSO4, filtered and conc in vacuo. Silica gel chromatography (15→65% EtOAc/hexanes over 30 minutes) afforded 0.1014 g (87% yield) of 1-[2-[4-(4-Methanesulfonyl-piperazin-1-yl)-phenyl]-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazin-7-yl]-2,2-dimethyl-propan-1-one as a yellow oil. MS (E/I): 572 (M+H).

Provenance & Evidence