Stable Cyclic Silenes from Reaction of Disilenides with Carboxylic Acid Chlorides†
Funding by the DFG (Sche 906/3‐1), the Fonds der Chemischen Industrie and the Otto‐Röhm‐Gedächtnisstiftung is gratefully acknowledged. D.S. thanks Prof. H. Braunschweig for generous support and Dr. R. Bertermann for NMR spectroscopy. A.S., S.I. and M.I. acknowledge funding by a Grant‐in‐Aid for Scientific Research from the Ministry of Education, Science, Sports, and Culture of Japan (Nos. 16205008, 16550028, 17655014, 18037008, 18039004), JSPS Research Fellowships for Young Scientists (SI), and COE (Center of Excellence) Program.
Abstract
Pyramidal silicon centers within the SiC bond are the most prominent feature of the first cyclic silenes stable at room temperature, as exhibited by X‐ray diffraction (see structure) and calculations. They are quantitatively formed by reaction of lithium disilenides, disila analogues of vinyllithium compounds, with acid chlorides, and are relatively inert, for example, towards the addition of MeOH.
