1349171-32-9Relevant articles and documents
N-heterocyclic carbene enabled rhodium-catalyzed ortho C(sp2)-H borylation at room temperature
Zhong, Lei,Zong, Zhi-Hong,Wang, Xi-Cun
, p. 2547 - 2552 (2019)
We report a rhodium-catalyzed ortho C(sp2)-H borylation of 2-phenylpyridines using commercially available N-heterocyclic carbenes (NHCs) as ligand and pinacolatodiboron (B2pin2) as borylating reagent. The reaction could take place at room temperature, tolerating a wide range of functionalities and affording ortho borylated products in moderate to excellent yields. The current method is also applicable to gram-scale reaction with reduced catalyst loading.
Ruthenium catalysed C-H bond borylation
Fernández-Salas, José A.,Manzini, Simone,Piola, Lorenzo,Slawin, Alexandra M. Z.,Nolan, Steven P.
supporting information, p. 6782 - 6784 (2014/06/23)
An easily prepared series of phenylindenyldihydridosilyl ruthenium complexes (2a-2d) was obtained by reaction of tertiary silanes with the commercially-available [RuCl(3-phenylindenyl)(PPh3)2] (1). The [RuH2(3-phenylindeny
Rh-catalyzed ortho -selective C-H borylation of N-functionalized arenes with silica-supported bridgehead monophosphine ligands
Kawamorita, Soichiro,Miyazaki, Tatsuya,Ohmiya, Hirohisa,Iwai, Tomohiro,Sawamura, Masaya
supporting information; experimental part, p. 19310 - 19313 (2012/01/15)
Supported phosphine-Rh systems, prepared in situ from silica-supported bridgehead monophosphines and [Rh(OH)(cod)]2, have enabled ortho-selective C-H borylation for a range of arenes containing nitrogen-based directing groups. The regioselectivity was excellent with various N-directing groups, including saturated and unsaturated N-heterocycles, tert-aminoalkyl groups, and imine-type C-N double bonds. The reaction showed significant tolerance toward steric repulsion around the reacting C-H bond. This Rh catalysis complements the Ir-catalyzed ortho-borylation, which is effective for arenes with oxygen-based directing groups.