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Addition of substituted isatins to 2,6-di-tert-butyl-4-methylenecyclohexa-2,5-dienone, generated in situ from 3,5-di-tert-butyl-4-hydroxybenzyl acetate, to form 1-substituted hydroxybenzylisatins, is reported. On the basis of these isatins novel isatin-3-thiosemicarbazones as well as isoindigo derivatives bearing a 2,6-di-tert-butylphenol moiety were obtained. The structures of all novel compounds are confirmed by IR, H NMR and C NMR.

A catalyst-free and easy nucleophilic addition of certain isatins to sterically hindered 2,6-di-tert-butyl-4-methylenecyclohexa-2,5-dienone