Dimethyl Sulfoxide → dimethyl 2-((1-(4-fluorophenyl)-1H-indazol-5-yl)(phenyl)methyl)-2-methylmalonate

Participants

Reaction Steps

Dimethyl 2-((1-(4-fluorophenyl)-1H-indazol-5-yl)(phenyl)methyl)malonate (250 mg, 0.58 mmol) was dissolved in THF (5 mL) and 60% oil dispersion NaH was added (24 mg, 0.6 mmol). After 1 h, added DMSO (2 mL) followed by MeI (5.8 mmol). After 72 h, the reaction was quenched with MeOH then poured into brine and extracted with EtOAc×3. The organic layers were dried over MgSO4, filtered, and concentrated. The residue was purified on SiO2 by MPLC using a 1:9 to 1:3 EtOAc/hexane gradient. Obtained 215 mg (83% yield) of dimethyl 2-((1-(4-fluorophenyl)-1H-indazol-5-yl)(phenyl)methyl)-2-methylmalonate. MS found: (M+H)+=447.

Provenance & Evidence