Novel polycyclic aromatic hydrocarbons by intramolecular diels-alder reaction: from lepidopterenes to benzenobenzopentaphenes via dianthrylethanes
作者:Hans-Dieter Becker、Kjell Andersson
DOI:10.1016/s0040-4020(01)87570-0
日期:1986.1
effect of the substituent (methyl, formyl, cyano, benzoyl) on the 4+2cycloreversion has been studied. Benzoyllepidopterene was thermally converted into benzoyldianthrylethane whose photochemical isomerization involving the excited triplet state results in an intramolecular Diels-Alder reaction. The biacetyl-sensitized photochemical isomerization of the parent 1,2-di(9-anthryl)ethane, followed by dehydrogenation
Dienophilic anthracenes: formation of novel triptycenes via thermal and photochemical intramolecular diels-alder reactions of dianthrylethanes
作者:Hans-Dieter Becker、Kjell Andersson
DOI:10.1016/s0040-4039(00)88155-1
日期:1983.1
1,2-Di(9-anthryl) ethanes, accessible by thermolysis of lepidopterenes, undergo thermal and photochemical intramolecularDiels-Alderreactions to give 1,2-dihydroanthracenes whose aromatization leads to novel derivatives of triptycene.