First Characterisation of Enol Carbonate and Enol Carbamate Radical Cations in Solution. Kinetics and Selectivity of the Mesolytic Cleavage of the O–CO Bond
作者:Michael Schmittel、Holger Trenkle
DOI:10.1246/cl.1997.299
日期:1997.4
For the first time enol carbonate and enol carbamate radicalcations are characterised in solution by CV and EPR; the sterically congested radicalcations undergo an unprecedented mesolytic cleavag...
ester radicalcations is characterized in solution by cyclic voltammetry and EPR spectroscopy. Preparative transformations using one-electron oxidants or anodic oxidation yield benzofurans after O-CO bond cleavage. Mechanistic investigations and direct detection of radical intermediates reveal that all enol radicalcations undergo exclusively O-CO bond cleavage to provide alpha-carbonyl cations and acyl