| The photoannulation of 4,4-dimethylcyclohex-2-en-1-one (DMC) to 1,1-diphenylethylene (DPE) results in the (2+2) formation of cyclobutanes as well as substituted octahydrophenanthren-(1 and 4)-ones. An earlier study invoked a triplet state exciplex as an intermediate to account for the spectroscopic observations. The analysis presented here obviates recourse to an exciplex and reveals competitive energy transfer as well as product forming interactions between the triplet state DMC and the ground state DPE.;Apprenticeship practicum. Bio-degradation of hydrocarbons is pertinent to oil production and to remediation of oil/fuel spills. Alkanes are considered unsuitable candidates for anaerobic biodegradation. However, Desulfobacterium oleovorans has demonstrated the ability to fully oxidize hexadecane to carbon dioxide. In this study gas chromatography and mass spectroscopy are used to investigate the biodegradation of alkanes by D. oleovorans. |
