Sur la synthese de chloro-3 indolinones a partir de β-nitrostyrenes diversement substitues
When treated with acetyl chloride and ferric chloride in methylene chloride, at 0 deg C, monosubstituted β-nitrostyrene derivatives such as 2,3 or 4-methyl, -chloro or -fluoro and 3-nitro-β-nitrostyrenes cyclize into the new corresponding 3-chloro-1,3-dih