Masatomi Kanai,à Manabu Yasumoto, Yokusu Kuriyama, Kenjin Inomiya, Yutaka Katsuhara, Kimio Higashiyama,y and Akihiro Ishiià Chemical Research Center, Central Glass Co., Ltd., Kawagoe 350-1151 yFaculty of Pharmaceutical Science, Hoshi University, Shinagawa, Tokyo 142-8501 ... High regioselectivity in hydrogenolysis of bis(a-methylben- zyl)amines having a fluorine atom on aromatic ring results from retardation of hydrogenolytic cleavage at ...