Akira Miyazawa,' Akihiko Tsuge? Takehiko Yamato? and Masashi Tashiro&* ... Institute of Advanced Material Study and Department of Molecular Science and Technology, Graduate School of Engineering Sciences, Kyushu University, 6-1 kasuga-koh-en, Kasuga-shi, Fukuoka 816, Japan, and Department of Industrial Chemistry, Faculty of Science and Engineering] Saga University, Honjou, Saga-shi Saga 840, Japan Received December 10, 1990 ... Introduction Electrophilic reagents ...