Ammonia → (R)-1-(2-chloro-5-oxo-6,7-dihydro-5H-5lambda4-thieno[3,2-d]pyrimidin-4-ylamino)-1-(4-fluoro-phenyl)-2-methyl-propan-2-ol

Participants

Reaction Steps

300 mg (R)-1-(2-chloro-6,7-dihydro-thieno[3,2-d]pyrimidin-4-ylamino)-1-(4-fluoro-phenyl)-2-methyl-propan-2-ol are placed in 2.0 ml acetic acid. The reaction mixture is cooled to +10° C. 127 μl hydrogen peroxide (35%) are added dropwise. The reaction mixture is stirred for 1 hour at +10° C. and then stirred into ice water. It is then made basic with an ammonia solution. The precipitate formed is suction filtered and purified by chromatography (silica gel, petroleum ether/ethyl acetate 50/50 to 0/100 then ethyl acetate/methanol 50/50). 70 mg of the product are obtained as an oil. Analytical HPLC-MS (method D): RT=1.17 min.

Provenance & Evidence