Synthesis of arylboronates by boron-induced ipso-deantimonation of triarylstibanes with boron trihalides and its application in one-pot two-step transmetallation/cross-coupling reactions
The reaction of triarylstibanes (1) with borontrihalides (BCl3, and BBr3) afforded arylboron dihalides (2) by utilizing all the three aryl groups on the antimony. Boron intermediates (2) were transformed to arylboronates (3) in good to excellent yields by treatment with methanol and 1,3-propanediol. Further, the Pd-catalyzed reactions of 2 with organic halides such as 1-bromonaphthalene and benzoyl
Regioselective electrophilic borylation of haloarenes
作者:Alessandro Del Grosso、Josue Ayuso Carrillo、Michael J. Ingleson
DOI:10.1039/c4cc10153g
日期:——
Haloarenes undergo directborylation using amine : BCl3 : AlCl3 in the ratio of 1 : 1 : 2. After esterification the pinacolboronate esters are isolated in good yield with regioselectivity controlled by steric and electronic effects.
The carboboration of Me<sub>3</sub>Si-substituted alkynes and allenes with boranes and borocations
作者:James R. Lawson、Valerio Fasano、Jessica Cid、Inigo Vitorica-Yrezabal、Michael J. Ingleson
DOI:10.1039/c5dt03003j
日期:——
ArylBCl2and aryl and vinyl containing borocations synthesised by electrophilic borylation effect the carboboration of TMS-substituted alkynes and allenes.
Gold(I) complexes featuring Z-type ligands introducing electron-withdrawing groups (EWG), Au(DPBF)Cl (4a) and Au(DPBCl)Cl (4b) (DPB = diphosphine-boron), have been synthesized and structurally characterized. These studies suggest that increasing the electron-withdrawing properties of the boron phenyl substituent only results in minor structural changes of the gold complexes. These complexes can be