反应详情

温度

0 °C

To a suspension of 6-methoxy-7-(piperidin-4-ylmethoxy)-3-((pivaloyloxy)methyl)-3,4-dihydroquinazolin-4-one hydrochloride (34 g, 84 mmol), (prepared as described for the starting material in Example 12), in water cooled at 0° C. was added 1N sodium hydroxide until the mixture was at pH8. The solution was extracted with trichloromethane and the organic layer was dried (MgSO4), filtered and evaporated to give 6-methoxy-7-piperidin-4-ylmethoxy)-3-((pivaloyloxy)methyl)-3,4-dihydroquinazolin-4-one (29 g).

1. custom(prepared
2. extractionThe solution was extracted with trichloromethane
3. dry with materialthe organic layer was dried (MgSO4)
4. filtrationfiltered
5. customevaporated