An Interrupted Pummerer/Nickel-Catalysed Cross-Coupling Sequence
作者:Miles H. Aukland、Fabien J. T. Talbot、José A. Fernández-Salas、Matthew Ball、Alexander P. Pulis、David J. Procter
DOI:10.1002/anie.201805396
日期:2018.7.26
An interrupted Pummerer/nickel‐catalysedcross‐coupling strategy has been developed and used in the elaboration of styrenes. The operationally simple method can be carried out as a one‐pot process, involves the direct formation of stable alkenyl sulfonium salt intermediates, utilises a commercially available sulfoxide, catalyst, and ligand, operates at ambient temperature, accommodates sp‐, sp2‐, and
method from commercially available aromatic halides has been used for the synthesis of a series of donor/acceptor para-substituted biphenyls, DC6H4C6H4A, where D is an electron donor group and A an electron acceptor group, which are of interest as liquid crystal precursors and as having potential in non-linear optics. Biaryls in which the donor-phenyl moiety is replaced by a 2-furyl or 2-thienyl can
Stereoconvergent Negishi Arylations of Racemic Secondary Alkyl Electrophiles: Differentiating between a CF<sub>3</sub> and an Alkyl Group
作者:Yufan Liang、Gregory C. Fu
DOI:10.1021/jacs.5b04725
日期:2015.8.5
wide array of enantioconvergent cross-couplings of arylzincreagents with CF3-substituted racemic secondary alkyl halides, a process that necessitates that the chiral catalyst be able to effectively distinguish between a CF3 and an alkyl group in order to provide good ee. We further demonstrate that this method can be applied without modification to the catalyticasymmetric synthesis of other families