136910-06-0Relevant academic research and scientific papers
Reactivity of triethylborane towards di(alkyn-1-yl)(chloro)silanes. Competition between 1,1-organoboration and 1,2-hydroboration
Khan, Ezzat,Bayer, Stefan,Wrackmeyer, Bernd
experimental part, p. 47 - 57 (2009/05/08)
Reactions of di(alkyn-1-yl)(chloro)silanes, HSi(Cl)(C≡C-R) 2, R1Si(Cl)(C≡C-R)2 or HSi(Cl)-(C≡C-R) C≡C-R′, with an excess of triethylborane, BEt3, proceed slowly (several days) at 100 - 120 °C. Twofold 1,1-organoboration of
1,2-Hydroboration of alkyn-1-yldichlorosilanes using triethylborane
Wrackmeyer, Bernd,Khan, Ezzat,Milius, Wolfgang
experimental part, p. 1267 - 1275 (2009/06/20)
Triethylborane, BEt3, can act as a 1,2-hydroborating reagent towards alkyn-1-ylsilanes, depending on the nature of the silane. A mechanism is proposed invoking hydrogen transfer from the β-carbon of one ethyl group, quite different from the 1,2-hydroboration mechanism using tri-n-propylborane, BnPr3. The structure of the products has been confirmed by comparison with that obtained using 9-borabicyclo[3.3.1]nonane, 9-BBN, as a well established 1,2-hydroborating reagent. All products have been characterized by a consistent set of NMR data (1H, 11B, 13C and 29Si NMR). The molecular structure of (Z)-1-dichlorosilyl-1-[9- (9-borabicyclo[3.3.1]nonyl)]-2-phenylethene has been determined by single crystal X-ray diffraction.
