Photoreactions of Tricyclic α-Cyclopropyl Ketones and Unsaturated Enones – Synthesis of Polyquinanes and Analogous Ring Systems
作者:Nikolay T. Tzvetkov、Beate Neumann、Hans-Georg Stammler、Jochen Mattay
DOI:10.1002/ejoc.200500546
日期:2006.1
Polycyclic systems of both angular and propellane type have been synthesized through intramolecular radical cyclization reactions, by photochemically induced electron transfer of tricyclic a-cyclopropyl ketones or by photolysis of unsaturated enones. In general, tricyclic a-cyclopropyl ketones, each bearing an alkynyl or alkenyl side chain at the position gamma to the carbonyl group, were used as starting