Dimethyl Sulfate → 3-Methoxy-2-pyridone

Participants

Reaction Steps

said pyridinone compound of Formula (6.0.0) by methylation with dimethylsulfate; wherein a reaction mixture is established with dimethylformamide (DMF) solvent in the presence of cesium carbonate, Cs2CO3, with gradual addition of said dimethylsulfate over a period of 30 minutes, while said reaction mixture temperature is kept at from 20° to 25° C.; and thereafter, said reaction mixture is maintained at said temperature and stirred for 16 hours; whereby there is produced a 3-methoxy-pyridinone compound N-protected by p-methoxybenzyl, of Formula (7.0.0):

Provenance & Evidence