We have developed a new method for asymmetric phenylseleno group transfer radical cyclization of unsaturated β-hydroxy esters. Various unsaturated α-phenylseleno β-hydroxy esters underwent radical cyclization in the presence of Et2AlCl in benzene with sunlamp irradiation at 25-30° C to give mono-and bicyclic group-transferred products in an efficient and highly regioselective and diastereoselective manner. To rationalize the high ...
