Application of photoelectron spectroscopy to molecular properties. 48. Contribution of photoelectron spectroscopy to the study of the flash vacuum pyrolysis of amino-substituted Meldrum's acid derivatives.
Résumé
The photoelectron spectroscopic study of the thermolysis of amino-substituted Meldrum's acids confirms the formation of several intermediates in the gas phase: their structure depends on the amine function being either secondary or tertiary. In the first case, imidoylketene is clearly characterized, while in the second case, cyclic end-products are identified. In both cases, the electronic structure characterization of unstable methylketene is not obvious from PE data. [on SciFinder(R)]