Treatment of chalcones with 3 equiv of thallium(III) nitrate (TTN) in aqueous acidic glyme results in formation of benzils by means of a discrete series of three independent oxidations involving the intermediacy of deoxybenzoins and then benzoins. This reaction constitutes a simple and convenient method for the synthesis

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The reactions of a variety, of acetylenes with thallium(III) nitrate (TTN) have been examined, and the nature of the products has been found to depend on the solvent employed and the structure of the acetylene.

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who detected the radical H2CCH2CI in fluid solution. Their results show clearly that the structure is asymmetric and that the chlorine atom is locked in the position indicated in I. Their isotropic coupling to a6Cl (17.4 G) is, however, considerably smaller than ours for the (CDa)2-CCD2CI radical. This difference arises partly because the coupling is strongly temperature dependent, decreasing on warming above 77 °K, and possibly because there is a large error in our measurement which arises because the tensor components in the solid-state spectra overlap considerably.

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