反应详情

235.9 mg of 4-{[4-(4bromo-2-methoxyphenyl)-2-hydroxy-4-methyl-2-(trifluoromethyl)pentylidene]amino}-1,3-dihydroindol-2-one is mixed at 0° C. with 6.42 ml of a 1 M solution of BBr3 in dichloromethane and stirred for four hours at room temperature. At 0° C., saturated sodium bicarbonate solution is carefully added in drops. After 3× extraction with ethyl acetate, the organic phases are dried on sodium sulfate. The desiccant is suctioned off, and the solvent is spun off. The residue is chromatographed on a Flashmaster. 125.4 mg (54%) of the desired compound is isolated.

1. extractionAfter 3× extraction with ethyl acetate
2. customthe organic phases are dried on sodium sulfate
3. customThe residue is chromatographed on a Flashmaster