Synthesis of Fluorinated Tricyclic Scaffolds by Intramolecular [2+2] Photocycloaddition Reactions
作者:Diego A. Fort、Thomas J. Woltering、Matthias Nettekoven、Henner Knust、Thorsten Bach
DOI:10.1002/anie.201204080
日期:2012.10.1
Fabulous Fluorine: The synthesis of fluorinated products 1 and 2 by [2+2] photocycloaddition was readily feasible after optimization of the irradiation conditions. The electron‐deficient trifluoroolefin unit reacted intramolecularly to products 1 (nine examples, d.r.>95:5). The reaction was also investigated after modification of position 2 of the side chain both with one or two fluoro substituents