Dimethyl Sulfoxide → 4-[6-(4-Benzyloxyphenyl)-7-(2-trimethylsilanylethoxymethyl)-7H-pyrrolo[2,3-d]pyrimidin-4-yloxy]-2-chlorophenylamine

Participants

Reaction Steps

After adding 12 ml of dimethylsulfoxide to the 6-(4-benzyloxyphenyl)-4-chloro-7-(2-trimethylsilanylethoxymethyl)-7H-pyrrolo[2,3-d]pyrimidine synthesized in Production Example 153-4, 141 mg (1.5 equivalents) of sodium hydride (60% dispersion, Aldrich) and 507 mg (1.5 equivalents) of 4-amino-3-chlorophenol were added while stirring, and stirring was then continued at room temperature for 10 minutes and then at 135-140° C. for 4 hours. The mixture was returned to room temperature, water was added, and liquid separation and extraction were performed with an ethyl acetate:tetrahydrofuran (5:1) mixed solvent. The organic layer was dried over sodium sulfate, concentrated and subjected to NH silica gel column chromatography (hexane-ethyl acetate) to obtain 1.20 g of the title compound.

Provenance & Evidence