Generation of a Ketocarbenoid from a,a-Dibromodeoxybenzoin by Samarium(i1) Di-iodide and Its Trapping by Alkene Cycloaddition ... Shin-ichi Fukuzawa,* Tatsuo Fujinami, and Shizuyoshi Sakai Department of Applied Chemistry, Faculty of Engineering, Shizuoka University, Hamamatsu 432, Japan ... Since the pioneering work of Kaganl in 1980, samarium(I1) di-iodide (SmI,) has been recognized as a useful reagent for carbon-carbon bond formation.2t We have ...