反应详情

Diisopropylethylamine (72 μl, 0.41 mmol) and isobutyryl chloride (44 mg, 0.41 mmol), in methylene chloride (0.5 ml) were added to a suspension of 4-[(4-fluoro-2-methyl-1H-indol-5-yl)oxy]-6-methoxy-7-(piperidin-4-ylmethoxy)quinazoline (150 mg, 0.34 mmol), (prepared as described for the starting material in Example 11), in methylene chloride (4 ml). After a few minutes all the material had gone into solution. The mixture was stirred for 3 hours at ambient temperature, washed with saturated sodium hydrogen carbonate solution, dried (MgSO4) and concentrated under reduced pressure. Column chromatography of the residue, eluting with 2% methanol/methylene chloride gave 4-[(4-fluoro-2-methyl-1H-indol-5-yl)oxy]-7-[(1-isobutyrylpiperidin-4-yl)methoxy]-6-methoxyquinazoline (90 mg, 52%).

1. custom(prepared
2. waitAfter a few minutes all the material had gone into solution
3. washwashed with saturated sodium hydrogen carbonate solution
4. dry with materialdried (MgSO4)
5. concentrationconcentrated under reduced pressure
6. washColumn chromatography of the residue, eluting with 2% methanol/methylene chloride