An Improved System for the Aqueous Lipshutz-Negishi Cross-Coupling of Alkyl Halides with Aryl Electrophiles
作者:Vasudev R. Bhonde、Brian T. O'Neill、Stephen L. Buchwald
DOI:10.1002/anie.201509341
日期:2016.1.26
development of a palladacyclic precatalyst supported by a new biaryl(dialkyl)phosphine ligand (VPhos) in combination with octanoic acid/sodium octanoate as a simple and effective surfactant system provided an improved catalyst system for the rapid construction of a broad spectrum of alkylated scaffolds from alkyl zinc reagents generated in situ.
Synthesis of hydroxylated oligoarene-type phosphines by a repetitive two-step method
作者:Shunpei Ishikawa、Kei Manabe
DOI:10.1016/j.tet.2009.10.101
日期:2010.1
oligoarene-type phosphines with various substitution patterns were synthesized. Such phosphines have potential as ligands for transition metal-catalyzed reactions. A successful route, which includes a repetitive Suzuki–Miyaura coupling–triflation sequence, reduction, and salt formation, was established starting from 2-bromophenyldicyclohexylphosphine oxide. Other key aspects of the method are the use of
A general and efficient method for the palladium-catalyzed cross-coupling of thiols and secondary phosphines
作者:Miki Murata、Stephen L. Buchwald
DOI:10.1016/j.tet.2004.05.044
日期:2004.8
cross-coupling of thiols with arylhalides was developed utilizing Pd(OAc)2/1,1′-bis(diisopropylphosphino)ferrocene as the catalyst. The substratescope is broad and includes a variety of aryl bromides and chlorides, which can be coupled to aliphatic and aromatic thiols. This catalystsystem has the widest substratescope of any reported to date. The present catalystsystem also enables the palladium-catalyzed