By TOHRU SAKAKIBARA,* IZUMI TAKAI, EIICHI OHARA, and ROKURO SUDOH (Department of Chemistry, Faculty of Science, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo 152, Japan) ... Summary Phenylselenenyl bromide reacts with nitro- alkanes to give nitro (phenylseleno) alkanes and oxidative elimination provided nitroallrenes. ... IN general, nitroallrenes, unique and versatile intermediates in synthetic work, are prepared by ...