Synthetic Applications in Radical/Radical Cationic Cascade Reactions
作者:Heiko Rinderhagen、Jochen Mattay
DOI:10.1002/chem.200304827
日期:2004.2.20
acetylenic side chain. The reactions result in bi- to tetracyclic ring systems via a fragmentation-radical/radical cationic addition reaction pathway with well defined ring juncture. The mode of cyclisation (endo/exo) can be partially controlled by addition of nucleophiles due to the suppression of radical cationic reaction pathways. Quantum chemical calculation of the cyclisation transition states underline
Preparation of cis- and trans-cyclodec-2- and -3-enones and studies of interconversions between them
作者:G. H. Whitham、M. Zaidlewicz
DOI:10.1039/p19720001509
日期:——
The cis- and trans-cyclodec-2- and -3-enones have been synthesised by stereospecific routes; a preparation of 3-hydroxycyclodecanone has also been developed. Under conditions of acid catalysis cis- and trans-cyclodec-2-enones are rapidly interconverted to give an equilibrium mixture containing 96% of the cis- and 4% of the trans-isomer. Efficient equilibration with the unconjugated isomers was not