An Isolable Potassium Salt of a Borasilene-Chloride Adduct.
Among the variety of isolable compounds with multiple bonds involving silicon, examples of compounds that contain silicon-boron double bonds (borasilenes) still remain relatively rare. Herein, we report the synthesis of the potassium salt of a chloride adduct of borasilene 1 ([2]-), which was obtained as an orange crystalline solid. Single-crystal X-ray diffraction analysis and reactivity studies on [2]-confirmed the double-bond character of the Si=B bond as well as the reduced Lewis acidity, which is due to the coordination of Cl-to the boron center. A thermal reaction of [2]-afforded a bicyclic product by formal intramolecular C-H insertion across the Si=B bond of 1, which was corroborated by a theoretical study.
Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, 980-8578, Japan.
Yuko
Y
Suzuki
Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, 980-8578, Japan.
Shintaro
S
Ishida
Isobe Degenerate π-Integration Project, Exploratory Research for Advanced Technology (ERATO), Japan Science and Technology Agency, Aoba-ku, Sendai, 980-8577, Japan.|Advanced Institute for Materials Research, Tohoku University, Aoba-ku, Sendai, 980-8577, Japan.|Department of Chemistry, University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
Sota
S
Sato
Isobe Degenerate π-Integration Project, Exploratory Research for Advanced Technology (ERATO), Japan Science and Technology Agency, Aoba-ku, Sendai, 980-8577, Japan.|Advanced Institute for Materials Research, Tohoku University, Aoba-ku, Sendai, 980-8577, Japan.|Department of Chemistry, University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
Hiroyuki
H
Isobe
Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, 980-8578, Japan.
Takeaki
0000-0002-8556-5785
T
Iwamoto
C-H activation; boron; multiple bonds; silicon