mCPBA-mediated conjugation of dibenzosuberenone and amines or carboxylic acids

One-pot synthesis of skeletons 4, 5, and 6 was performed with moderate to good yields in DMF by mCPBA (m-chloroperoxybenzoic acid)-mediated condensation of dibenzosuberenone 1 and different 1,2-diaminobenzenes 2 or carboxylic acids 3. The oxidant-mediated reaction conditions had been discussed. Furthermore, reaction of 1 and oxalic acid was investigated for the formation of bianthronyl 9.

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