BippyPhos: A Single Ligand With Unprecedented Scope in the Buchwald–Hartwig Amination of (Hetero)aryl Chlorides
作者:Sarah M. Crawford、Christopher B. Lavery、Mark Stradiotto
DOI:10.1002/chem.201302453
日期:2013.12.2
demonstrating the largest scope in the NH‐containing coupling partner reported for a single Pd/ligand catalyst system. We also established BippyPhos/[Pd(cinnamyl)Cl]2 as exhibiting the broadest demonstrated substrate scope for metal‐catalyzed cross‐coupling of (hetero)aryl chlorides with NH indoles. Furthermore, the remarkable ability of BippyPhos/[Pd(cinnamyl)Cl]2 to catalyze both the selective monoarylation
Reversible Hydride Transfer to <i>N</i>,<i>N</i>′-Diarylimidazolinium Cations from Hydrogen Catalyzed by Transition Metal Complexes Mimicking the Reaction of [Fe]-Hydrogenase
作者:Masahiro Hatazawa、Naoko Yoshie、Hidetake Seino
DOI:10.1021/acs.inorgchem.7b00806
日期:2017.7.17
the single metal active site, several transitionmetalcomplex catalysts capable of such activation were utilized in the model system. Reduction of 1[BF4] to N,N′-diphenylimidazolidine (2) was achieved under 1 atm H2 at ambient temperature in the presence of an equimolar amount of NEt3 as a proton acceptor. The proposed catalytic pathways involved the generation of active hydride complexes and subsequent
Rational and Predictable Chemoselective Synthesis of Oligoamines via Buchwald–Hartwig Amination of (Hetero)Aryl Chlorides Employing Mor-DalPhos
作者:Bennett J. Tardiff、Robert McDonald、Michael J. Ferguson、Mark Stradiotto
DOI:10.1021/jo202358p
日期:2012.1.20
We report a diverse demonstration of synthetically useful chemoselectivity in the synthesis of di-, tri-, and tetraamines (62 examples) by use of Buchwald–Hartwig amination employing a single catalyst system ([Pd(cinnamyl)Cl]2/L1; L1 = N-(2-(di(1-adamantyl)phosphino)phenyl)morpholine, Mor-DalPhos). Competition reactions established the following relative preference of this catalyst system for amine