Chloroform → 5-Methoxy-2,4-dimethylpyrimidine

Participants

Reaction Conditions

Reaction Steps

2,4-Dichloro-5-methoxypyrimidine (5.3 g) was dissolved in THF (51.3 ml), and tetrakis(triphenylphosphine)palladium (1.71 g) and trimethylaluminum (2.0 M: 51.8 ml) were then added to the solution. The temperature of the obtained mixture was heated to 75° C., and the obtained mixture was then stirred overnight. Thereafter, 1 equivalent of trimethyl aluminum was added to the reaction solution, and the obtained mixture was then stirred for 6 hours. Thereafter, saturated ammonium chloride aqueous solution was added dropwise to the reaction solution under cooling on ice, and liquid separation and extraction were carried out with chloroform. The organic layer was dried over magnesium sulfate, and the solvent was then concentrated under reduced pressure. The obtained residue was purified by silica gel column chromatography (n-heptane:ethyl acetate to ethyl acetate), so as to obtain the title compound (4.2 g).

Provenance & Evidence