反应详情

The procedure is as in Example 7, but starting with 2-(7-bromo-1,8-naphthyridin-2-yl)-3-hydroxy-1-isoindolinone (8.55 g) in methylene chloride (110 cc), triethylamine (11.1 g), 5-methylhexanoyl chloride (7 g) and 4-dimethylaminopyridine (50 mg). After the residue obtained has been crystallized in hexane and then recrystallized in ethanol, 2-(7-bromo-1,8-naphthyridin-2-yl)-3-oxo-1-isoindolinyl 5-methylhexanoate (7.5 g), m.p. 136° C., is obtained.

1. customAfter the residue obtained
2. customhas been crystallized in hexane
3. customrecrystallized in ethanol