Intramolecular Photochemical Dioxenone−Alkene [2 + 2] Cycloadditions as an Approach to the Bicyclo[2.1.1]hexane Moiety of Solanoeclepin A
作者:Richard H. Blaauw、Jean-François Brière、Remco de Jong、Jorg C. J. Benningshof、Angeline E. van Ginkel、Jan Fraanje、Kees Goubitz、Henk Schenk、Floris P. J. T. Rutjes、Henk Hiemstra
DOI:10.1021/jo0056500
日期:2001.1.1
solanoeclepin A (1), the most active natural hatching agent of potato cyst nematodes, was approachedvia an intramolecular [2 + 2] photocycloaddition. Aldehyde 12 containing the dioxenone chromophore served as a useful starting material, allowing the synthesis of a variety of photocycloaddition substrates via Grignard addition or via a Nozaki-Hiyama-Kishi reaction. Photolysis of the unsubstituted alkene 14 led