... IV.“ Reaction of Diketene with Thioureas, Thioamide, and Aminothiolz) MASANORI SAKAMOTO,* TAKASHI AKIMOTO, KYOKO FUKUTOMI, and KEITARO ISHII Meiji College of ... Kuwabara, and Y. Tomimatsu, ibid., 27, 2116 (1979); c) Part III: M. Sakamoto, T. Akimoto, Y. Akiyama ...