反应详情

To a solution of 5-phenyl-4-(pyridin-2-ylmethylamino)quinazoline-2-carbaldehyde (0.9 g, 3 mmol) in THF (10 mL) was added methyl 2-benzyloxycarbonylamino-2(dimethoxyphosphinyl)acetate (0.96 g, 2.9 mmol) followed by tetramethyguanidine (0.66 mL. 5.3 mmol). The resulting solution was stirred at RT for 3 h. After this time, the reaction mixture was diluted with ethyl acetate, washed successively with water and brine, dried over Na2SO4, filtered then and concentrated under reduced pressure. The resulting residue was purified by silica gel chromatography (30% ethyl acetate in hexane) to yield (Z)-methyl 2-(benzyloxycarbonylamino)-3-(5-phenyl-4-(pyridin-2-ylmethylamino)quinazolin-2-yl)acrylate (0.7 g (48% yield). LCMS Method V: retention time 1.94 min; [M+1]=546.0.

1. washwashed successively with water and brine
2. dry with materialdried over Na2SO4
3. filtrationfiltered
4. concentrationconcentrated under reduced pressure
5. customThe resulting residue was purified by silica gel chromatography (30% ethyl acetate in hexane)