Catalytic Hydroboration of Organic Nitriles Promoted by Aluminum Complex
作者:Adimulam Harinath、Jayeeta Bhattacharjee、Tarun K. Panda
DOI:10.1002/adsc.201801252
日期:2019.2.19
We demonstrate an efficient protocol for the chemoselective hydroboration of organic nitriles with pinacolborane (HBpin) and catecholborane (HBcat) using aluminum alkyl complex [κ2‐2‐F−C6H4NP(Se)Ph2}2Al−(Me)] as a pre‐catalyst to afford diboryl amines under solvent‐free and mild conditions (60 °C) in high yield. The aluminum complex was prepared by the reaction of [2‐F−C6H4NHP(Se)Ph2] and trimethylaluminum
Simple nickel salts, bis(acetylacetonato)nickel(II) and its derivatives, catalysed hydroboration reactions of aryl and alkyl nitiles with catechol borane. The reaction smoothly proceeded for nitriles with various substituents to form the corresponding bis(boryl)amines in good to excellent yields.
Catalytic Recycling of a Th–H Bond via Single or Double Hydroboration of Inactivated Imines or Nitriles
作者:Sayantani Saha、Moris S. Eisen
DOI:10.1021/acscatal.9b01399
日期:2019.7.5
catalysts in this reaction. In addition, for aldimines (—C═N—), the hydroboration precatalyst Th2 has been synthesized by the protonolysis of a seven-membered N-heterocyclic iminato ligand (LH) and Th1. The Th2 crystal structure and its performance in the synthesis of hydroborated secondary amine are also here presented. Detailed kinetic studies and thermodynamic and stoichiometric experiments provided
Efficient and chemoselective hydroboration of organic nitriles promoted by TiIV catalyst supported by unsymmetrical acenaphthenequinonediimine ligand
作者:Indrani Banerjee、Srinivas Anga、Kulsum Bano、Tarun K. Panda
DOI:10.1016/j.jorganchem.2019.120958
日期:2019.12
titanium complex [(η5-C5H5)L}TiCl2] (1) in good yield. The molecular structures of the N-silyl ligand (LSiMe3) and Ti(IV) complex 1 were established by single-crystal X-ray analysis. Complex 1 was tested as a pre-catalyst for hydroboration of nitriles with pinacolborane (HBpin) and catecholborane (HBcat) to afford diboryl amines at ambient temperature. Titanium complex 1 exhibited high conversion, superior
Catalytic hydroboration by an imido-hydrido complex of Mo(<scp>iv</scp>)
作者:Andrey Y. Khalimon、Philip Farha、Lyudmila G. Kuzmina、Georgii I. Nikonov
DOI:10.1039/c1cc14508h
日期:——
The imido-hydrido complex (ArN)Mo(H)(Cl)(PMe3)3 catalyses a variety of hydroboration reactions, including the first example of catalytic addition of HBCat to nitriles to form the bis(borylated) amines RCH2N(BCat)2. The latter species easily undergoes chemoselective coupling with aldehydes R′C(O)H to yield imines RCH2NC(H)R′.