Catalytic Activation of Unstrained C(Aryl)–C(Alkyl) Bonds in 2,2′-Methylenediphenols
作者:Jun Zhu、Yibin Xue、Rui Zhang、Benjamin L. Ratchford、Guangbin Dong
DOI:10.1021/jacs.1c13342
日期:2022.2.23
unstrained and nonpolar C–C bonds remains a largely unmet challenge. Here, we describe our detailed efforts in developing a rhodium-catalyzed hydrogenolysis of unstrained C(aryl)–C(alkyl) bonds in 2,2′-methylenediphenols aided by removable directing groups. Good yields of the monophenol products are obtained with tolerating a wide range of functional groups. In addition, the reaction is scalable, and
Orthopalladated phosphinite complexes as high-activity catalysts for the Suzuki reaction
作者:Robin B. Bedford、Samantha L. Hazelwood (née Welch)、Peter N. Horton、Michael B. Hursthouse
DOI:10.1039/b303657j
日期:——
phosphinite ligands PR2(OAr) (R = Ph, iPr), their simple complexes with palladium(II) and their palladacycliccomplexes has been investigated. The crystal structure of one of the palladacycliccomplexes, [Pd(μ2-Cl)κ2-P,C-PiPr2(OC6H2-2,4-tBu2)}2], has been determined. The palladacycliccomplexes show extremely high activity in the Suzuki coupling of aryl bromide substrates with phenylboronic acid and can