Thermal Decomposition of 1,1,2,2-Tetraaryl-1,2-ethandiols

摘要

The thermal degradation of a series of 1,1,2,2-tetraaryl-1,2-ethandiols has been examined usingthermogravimetry (TGA) and gas chromatography/ mass spectrometry (GC/MS). These compounds aresmoothly converted to the corresponding diaryl ketone and diaryl carbinol, i.e., the compounds undergodisproportionation arising from homolytic cleavage of the central carbon-carbon bond. Presumably,cleavage of the carbon-carbon bond generates a radical pair which disproportionates to provide theobserved products.