反应详情

To a solution of O-(2-morpholinoethyl)hydroxylamine (600 mg, 4.1 mmol) in anhydrous toluene (6 mL) was added (R)-2-amino-7-(2-bromo-4-fluorophenyl)-4-methyl-7,8-dihydropyrido[4,3-d]pyrimidine-5(6H)-thione (0.150 g, 0.41 mmol) and mercuric acetate (II) (262 mg, 0.82 mmol). The resultant mixture was heated to 100° C. for 1 h. The reaction was allowed to cool to r.t. and filtered through a pad of Celite, rinsing with EtOAc and CH3OH. The filtrate was concentrated to provide a yellow-green oil, which was purified by preparative HPLC eluting with TFA/ACN/H2O. The fractions were concentrated to provide (R,Z)-2-amino-7-(2-bromo-4-fluorophenyl)-4-methyl-7,8-dihydropyrido[4,3-d]pyrimidin-5(6H)-one O-2-morpholinoethyl oxime (196 mg, 0.41 mmol). [M+H] calc'd for C20H24BrFN6O2, 480. found, 480.

1. filtrationfiltered through a pad of Celite
2. washrinsing with EtOAc and CH3OH
3. concentrationThe filtrate was concentrated
4. customto provide a yellow-green oil, which
5. customwas purified by preparative HPLC
6. washeluting with TFA/ACN/H2O
7. concentrationThe fractions were concentrated