Dimethyl Sulfate → HCID 53945577, compound

Participants

Reaction Steps

A solution of methyl 4-(3-isopropylphenoxy)-6-methoxy-2-methyl-pyrimidin-5-yl-acetate (8.6 g, 26 mol) in 1,2-dimethoxyethane (20 ml) and N,N-diformylmethylamine (8 ml) is added at 5° C. to a suspension of NaH (1.6 g, 80% in oil, 52 mol) in DMF (30 ml). The mixture is stirred for 4 hours at room temperature. Dimethylsulfate (3.7 ml, 39 tool) is added at 0° C and stirring is continued for 3 hours. Dilution with ether, washing with brine and chromatography on silicagel (eluent hexane/ethyl acetate 3:1) gives methyl α-[4-(3-isopropylphenoxy )-6-methoxy-2-methyl-pyrimidin-5-yl]-β-methoxyacrylate as a colorless oil (7.2 g, 74%).

Provenance & Evidence