Small Substituents Make Large Differences: Aminopyrimidinyl Phosphanes Undergoing C–H Activation
作者:Saeid Farsadpour、Leila Taghizadeh Ghoochany、Yu Sun、Werner R. Thiel
DOI:10.1002/ejic.201100659
日期:2011.10
synthesised from (C6H5CN)2PdCl2 and (2-aminopyrimidinyl)phosphanes show different coordination modes depending on the nature of the amino substituent attached to the pyrimidine ring. Whereas P,N-coordination is observed for primary and secondary amino groups, tertiary amino groups lead to C–Hactivation at the pyrimidine ring. These differences result in strongly different catalytic activities in the
Bimetallic Cu/Pd Catalysts with Bridging Aminopyrimidinyl Phosphines for Decarboxylative Cross-Coupling Reactions at Moderate Temperature
作者:Dagmar Hackenberger、Bingrui Song、Matthias F. Grünberg、Saeid Farsadpour、Fabian Menges、Harald Kelm、Cedric Groß、Timm Wolff、Gereon Niedner-Schatteburg、Werner R. Thiel、Lukas J. Gooßen
DOI:10.1002/cctc.201500769
日期:2015.11
catalyst system is presented that enables the decarboxylative cross‐coupling of triflates with carboxylate salts at only 100 °C, which is 70 °C lower than with previous Cu/Pd‐based systems. The new protocol allows the coupling of a broad range of aryl triflates with various substituted 2‐nitrobenzoates in good to excellent yields. The key feature of the catalyst system is a bidentate P,N‐ligand designed
P,C-bond cleavage in the ligand sphere of a nickel(<scp>ii</scp>) complex
作者:Simon P. Walg、Alexandra D. Schmidt、Marcus Schmitz、Saeid Farsadpour、Johannes Lang、Mark Niebergall、Yu Sun、Peter W. Roesky、Gereon Niedner-Schatteburg、Werner R. Thiel
DOI:10.1039/c4dt02158d
日期:——
P,C-bond cleavage at a pyrimidinyl ligand results in a pentacoordinate nickel(ii) complex coordinated by a carbanionic ligand.