Tandem Free-Radical Ring Expansion and 5-exo-dig 5-Hexynyl Radical Cyclization: A Useful Approach to Fused Bicyclic Carbocycles

Article abstract of DOI:10.1021/jo00307a010

The effective preparation of hydrindan-1,4-diones, hydroazulene-1,4-diones, and hydrocyclopentacyclooctene-1,4-diones through implementation of an efficient tandem free-radical ring expansion, 5-exo-dig 5-hexynyl radical cyclization is detailed.