Synthesis, Structure, and Reactions of the First Stable Dimercaptoborane
作者:Norihiro Tokitoh、Mitsuhiro Ito、Renji Okazaki
DOI:10.1021/om00010a007
日期:1995.10
The first stable dimercaptoborane, TbtB(SH)(2) (I), was synthesized by the sulfurization of the corresponding overcrowded lithium aryltrihydroborate bearing a 2,4,6-tris[bis(trimethylsilyl)methyl]phenyl (Tbt) group. Dilithiation of 1 followed by treatment with Cp(2)TiCl(2) resulted in the isolation of a novel metallacycle, 1,3,2,4-dithiaboratitanetane 2, as stable red crystals. Molecular structures of the novel organoboron compounds I and 2 were both determined by X-ray crystal-lographic analysis.
Formation of Oxoborane and Thioxoborane from a Dithiastannaboretane Derivative
作者:Mitsuhiro Ito、Norihiro Tokitoh、Renji Okazaki
DOI:10.1080/10426509708545677
日期:1997.1.1
Reaction with an oxygen-donating reagent such as DMSO and thermolysis of a 1,3,2,4-dithiastannaboretane derivative bearing 2,4,6-tris[bis(trimethylsilyl)methyl]phenyl (Tbt) group led to the formation of novel boron-group 16 element double bond compounds, oxoborane (Tbt-B=O) and thioxoborane (Tbt-B=S). The oxoborane and thioxoborane underwent cycloaddition reactions to give the corresponding adducts in good yields.