Convergent Synthesis of E‐Disilene by the Reduction of Diastereomerically Separable 1,2‐Dichlorodisilanes

Abstract

AbstractDiastereomerically separable 1,2‐dichlorodisilanes possessing two chiral silicon centers were synthesized. By the reduction reaction, both diastereomeric disilanes afforded the same extremely air‐unstable E‐disilene. In addition, to get further experimental evidence for the formation of the disilene, we performed the reduction reaction of the corresponding dibromosilane as an alternative synthetic route toward the disilene, which resulted in the formation of a cyclotrisilane having an asymmetric all‐silicon three‐membered skeleton as a co‐product depending on the conditions. As a result of these experimental results and the supporting DFT calculations, we found some clues for the investigation into the synthetic mechanism of disilenes.