Practical Preparation Methods for Highly Active Azaadamantane-Nitroxyl-Radical-Type Oxidation Catalysts - Shibuya, Masatoshi; Sasano, Yusuke; Tomizawa, Masaki; Hamada, Toshimasa; Kozawa, Masami; Nagahama, Noriaki; Iwabuchi, Yoshiharu (Synthesis, 2011)