An Efficient Synthesis of Carbamates by Tin-Catalyzed Transcarbamoylation Reactions of Primary and Secondary Alcohols - Ichikawa, Yoshiyasu; Morishita, Yukinori; Kusaba, Shuhei; Sakiyama, Naoto; Matsuda, Yasunori; Nakano, Keiji; Kotsuki, Hiyoshizo (Synlett, 2010)