ACYL RADICAL CYCLIZATIONS IN SYNTHESIS. PART 1. SUBSTITUENT EFFECTS ON THE MODE AND EFFICIENCY OF CYCLIZATION OF 6-HEPTENOYL RADICALS

Article abstract of DOI:10.1016/S0040-4020(01)89534-X

The separate, and combined, influences of ether, silyl ether and cyclic ketal groups at positions 3 and 5 on the mode and efficiency of 6-heptenoyl radical cyclizations have been studied with a view to the eventual synthesis of 1α,25-dihydroxyvitamin D