Shinji Tsunoi, Minoru Tanaka, Shinji Tsunoi, Ilhyong Ryu, Sumiaki Yamasaki, Noboru Sonoda and Mitsuo Komatsu
Under a one-electron reduction system composed of zinc and an aprotic solvent, alk-4-enyl iodides react with CO and alkenes to give bicyclo[3.3.0]octan-1-ols and bicyclo[3.2.1]octan-1-ols via radical/anionic dual annulations.