反应详情

100 mg (0.4 mmol) of the compound from Example 23, 94 mg (0.7 mmol) of N,N-diisopropylethylamine and 80 mg (0.7 mmol) of azetidin-3-ol hydrochloride are suspended in 3 ml of THF and reacted at 120° C. in a single-mode microwave oven (CEM Explorer) for 20 min. 2 ml of ethanol are then added, and the mixture is again reacted in a single-mode microwave oven (CEM Explorer) for 20 min. The mixture is then reacted initially at 120° C. for a further 60 min and then at 175° C. for 60 min in a single-mode microwave oven (CEM Explorer). The mixture is then separated directly by preparative HPLC (RP18 column; mobile phase: acetonitrile/water gradient with addition of 0.1% TFA). The product-containing fractions are combined and concentrated on a rotary evaporator, and the residue is dried under high vacuum. The residue is then stirred in 5 ml of a 4 N solution of hydrogen chloride in dioxane for 30 min. The solid is filtered off, washed with tert-butyl methyl ether and dried under high vacuum.

1. customreacted at 120° C. in a single-mode microwave oven (CEM Explorer) for 20 min
2. customthe mixture is again reacted in a single-mode microwave oven (CEM Explorer) for 20 min
3. customThe mixture is then reacted initially at 120° C. for a further 60 min
4. customThe mixture is then separated directly by preparative HPLC (RP18 column; mobile phase: acetonitrile/water gradient with addition of 0.1% TFA)
5. concentrationconcentrated on a rotary evaporator
6. customthe residue is dried under high vacuum
7. filtrationThe solid is filtered off
8. washwashed with tert-butyl methyl ether
9. customdried under high vacuum