3112-01-4Relevant articles and documents
Electron-deficient olefin ligands enable generation of quaternary carbons by Ni-catalyzed cross-coupling
Huang, Chung-Yang,Doyle, Abigail G.
supporting information, p. 5638 - 5641 (2015/05/20)
A Ni-catalyzed Negishi cross-coupling with 1,1-disubstituted styrenyl aziridines has been developed. This method delivers valuable β-substituted phenethylamines via a challenging reductive elimination that affords a quaternary carbon. A novel electron-deficient olefin ligand, Fro-DO, proved crucial for achieving high rates and chemoselectivity for C-C bond formation over β-H elimination. This ligand is easy to access, is stable, and presents a modular framework for reaction discovery and optimization. We expect that these attributes, combined with the fact that the ligands impart distinct electronic properties to a metal, will support the invention of new transformations not previously possible using established ligands.
Direct conversion of arylamines to pinacol boronates: A metal-free borylation process
Mo, Fanyang,Jiang, Yubo,Qiu, Di,Zhang, Yan,Wang, Jianbo
supporting information; experimental part, p. 1846 - 1849 (2010/06/16)
Leave the metal out: Arylboronates are produced In moderate to good yields by direct borylation of readily available aryl amines (see scheme). The reaction can be carried out under air at room temperature and transition-metal catalysis is not required. The boronate products can be used without purification in SuzukiMiyaura cross-coupling reactions. Chemical equation representation
A new palladium catalyzed protocol for atom-efficient cross-coupling reactions of?triarylbismuths with aryl halides and triflates
Rao, Maddali L.N.,Jadhav, Deepak N.,Banerjee, Debasis
, p. 5762 - 5772 (2008/09/21)
A new palladium catalyzed protocol for an atom-efficient cross-coupling reaction of triarylbismuths with aryl halides and triflates has been described. The palladium catalytic system with Cs2CO3 base was found to be very efficient in DMA solvent to furnish excellent yields of cross-coupled functionalized biaryls in short reaction times.