Abstract
Treatment of alkylbenzenes with various metal acetates (MnIII, FeIII, CoIII, CuII, and PbIV) in acetic acid containing perchloric acid at reflux temperature affords diarylmethanes as main products: MnIII and FeIII acetates are found to be better reagents than the others, and have comparable activity for diarylmethane formation. Reactions with MnIII acetate–perchloric acid differ from those with FeIII perchlorate (reported previously) in the following ways: the presence of oxygen increases the amount of benzylic aldehyde produced in the former and of diarylmethane produced in the latter reaction; both disproportionation and polymerization, which occur in the latter reaction, are minimized in the former case, making the work-up procedure easier.
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Schedule a callMore From: Journal of the Chemical Society, Perkin Transactions 1
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