Electronic structure and gas-phase thermolysis of 4-substituted 3,3,5,5-Tetramethyl-3,5-dihydro-4H-pyrazoles studied by photoelectron spectroscopy. First evidence for an alkylideneselenirane
作者:Heidi M. Muchall、Klaus Kowski、Paul Rademacher、Andreas Fuss、Ralf Neuberger、Helmut Quast、Peter Komnick、Wolfram Sander
DOI:10.1016/0040-4020(95)01125-0
日期:1996.2
structures of the tetramethyldihydropyrazoles 1 – 5 have been studied by photoelectron spectroscopy and interpreted with the aid of semi-empirical SCF MO calculations (PM3). Gas-phase pyrolyses of 1 – 5 have been carried out and analysed by photoelectron spectroscopy. Both 1 and 2 and in part 3 eliminate molecular nitrogen to form reactive species which cyclize to three-membered rings, i.e. the novel