反应详情

温度

100 °C

4-[7-(3-Methanesulfonyloxy-propoxy)-quinazolin-4-yl]-piperidine-1-carboxylic acid tert-butyl ester (0. 1 mmol), prepared as described in Example 27, was dissolved in anhydrous dioxane together with piperazine (0.5 mmol) and the mixture was stirred at 100° C. overnight and then concentrated in vacuo, then diluted with water and extracted with DCM. The DCM extract was washed with water thrice, dried over anhydrous MgSO4, filtered and concentrated in vacuo to obtain 4-[7-(3-piperazin-1-yl-propoxy)-quinazolin-4-yl]-piperidine-1-carboxylic acid tert-butyl ester. This (0.05 mmol) was dissolved in anhydrous DCM (1 mL) and treated with Et3N (0.1 mmol) followed by methanesulfonyl chloride (0. 1 mmol) and the mixture was stirred at rt overnight and then washed with water thrice, then dried over anhydrous MgSO4, filtered and concentrated in vacuo. To this was added 3M HCl/MeOH (1 mL) and the mixture was stirred at rt for 2 h and then concentrated in vacuo.

1. concentrationconcentrated in vacuo
2. additiondiluted with water
3. extractionextracted with DCM
4. extractionThe DCM extract
5. washwas washed with water thrice
6. dry with materialdried over anhydrous MgSO4
7. filtrationfiltered
8. concentrationconcentrated in vacuo