An Arsanylidensilane (“Arsasilene”) and its Derivatization with Tellurium and Benzophenone

Abstract

The AsSi compound 1 is surprisingly easily accessible from the lithiated arsanylfluorosilane 2. Tellurium reacts with 1 to give the three-membered ring compound 3, and with benzophenone the [2 + 2]-cycloadduct 4 is obtained. Since under drastic conditions (160°C, 10 h) 4 decomposes into intermediate Is2SiO and an arsaalkene, arsasilenes offer a new route to arsaalkenes. Is = 2,4,6-iPr3C6H2.