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2005, Vol.34, No.4

582-583

Reaction of Dilithiosilane R2SiLi2 and Dilithiogermane R2GeLi2 (R = SiMetBu2) with MesBCl2 (Mes = 2,4,6-trimethylphenyl): Evidence for the Formation of Silaborene R2Si=BMes and Germaborene R2Ge=BMes

Nakata Norio 1 , Izumi Rika 1 , Lee Vladimir Ya. 1 , Ichinohe Masaaki 1 , Sekiguchi Akira 1
1 Department of Chemistry, Graduate School of Pure and Applied Sciences, University of Tsukuba
https://doi.org/10.1246/cl.2005.582

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Abstract
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1,1-Dilithiosilane and -germane, R2SiLi2 and R2GeLi2 (R = SiMetBu2) reacted with MesBCl2 to give the unexpected seven-membered ring products, [1,3,2]oxasila- and -germaborepanes, through the intermediate formation of >Si=B– and >Ge=B– doubly bonded species.

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