867-97-0Relevant academic research and scientific papers
Using Ylide Functionalization to Stabilize Boron Cations
Scherpf, Thorsten,Feichtner, Kai-Stephan,Gessner, Viktoria H.
supporting information, p. 3275 - 3279 (2017/03/17)
The metalated ylide YNa [Y=(Ph3PCSO2Tol)?] was employed as X,L-donor ligand for the preparation of a series of boron cations. Treatment of the bis-ylide functionalized borane Y2BH with different trityl salts or B(C6F5)3 for hydride abstraction readily results in the formation of the bis-ylide functionalized boron cation [Y?B?Y]+ (2). The high donor capacity of the ylide ligands allowed the isolation of the cationic species and its characterization in solution as well as in solid state. DFT calculations demonstrate that the cation is efficiently stabilized through electrostatic effects as well as π-donation from the ylide ligands, which results in its high stability. Despite the high stability of 2 [Y?B?Y]+ serves as viable source for the preparation of further borenium cations of type Y2B+←LB by addition of Lewis bases such as amines and amides. Primary and secondary amines react to tris(amino)boranes via N?H activation across the B?C bond.
Preparation of some organo-bis(diisopropylamino)boranes and their application to the synthesis of oxazaborolidines
Chavant, P. Y.,Vaultier, M.
, p. 37 - 46 (2007/10/02)
The reactivity of ClB(NEt2)2 and ClB(NiPr2)2 towards organomagnesium or organolithium derivatives was studied.ClB(NiPr2)2 proved to be an excellent reagent for the preparation of pure boronic derivatives RB(NiPr2)2, which
Metall-Bor-Verbindungen, 13. Zur Synthese und Reaktivitaet einiger (Trimethylstannyl)borane
Noeth, Heinrich,Schwerthoeffer, Ruediger
, p. 3056 - 3062 (2007/10/02)
The preparation of some amino(trimethylstannyl)boranes and their chemical properties are described.With Me3SnLi (Me = CH3) as a reagent only the synthesis of Me3SnB(NR2)2 (1a, b), Me3SnBCl(NR2) (2a, b), and (Me3Sn)2BNR2 (3b) was achieved.The stannylboranes Me3SnB(NR2)2 show astonishing thermal stability.Their Sn - B bonds are broken by hydrogen, the halogens, and chalcogens as well as by alcohols.HCl cleaves the B - N bond.
