Ni- and fe-based cross-coupling reactions free download

 · Cross-dehydrogenative coupling (CDC), which enables the formation of carbon–carbon (C–C) and C–heteroatom bonds from the direct coupling of two C–H bonds or C–H/X–H bonds, represents a new state of the art in the field of organic chemistry. Iron, a prominent metal, has already shown its versatile application in chemical synthesis. This review attempts to provide a comprehensive Cited by: The series Topics in Current Chemistry Collections presents critical reviews from the journal Topics in Current Chemistry organized in topical volumes. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materialsBrand: Springer International Publishing.  · Nickel is one of the metal centers that was used in the pioneering studies of cross-coupling reactions. The use of low valent nickel complexes to activate strong σ-bonds [] has attracted renewed interest, and significant advancements have been made in recent www.doorway.ruularly important among these advances are nickel-catalyzed cross-coupling reactions using inert phenolic .

An efficient and palladium-free nickel-catalyzed Sonogashira cross-coupling reaction protocol is presented. In the presence of mol% of Ni(acac) 2, mol% of (Ph 2 P) 2 py, and mol% of CuI, cross-coupling reaction of various aryl bromides and aryl chlorides with phenylacetylene as a terminal alkyne gave the corresponding alkynes in. A Ni-catalyzed Suzuki-type cross-coupling of boronic acids with epoxides without an exogenous base and with broad substrate scope has been developed. The product selectivity of styrenyl epoxides is different from that of previous work. This methodology uses readily available starting materials to access a ra. Herein we report on the cross-coupling reaction of phenylmagnesium bromide with aryl halides using the well-defined tetrahedral Ni(I) complex, [(Triphos)NiICl] (Triphos = 1,1,1-tris(diphenylphosphinomethyl)ethane). In the presence of mol % [(Triphos)NiICl], good to excellent yields (%) of the respective coupling products within a reaction time of only h at room temperature were.

A Ni-catalyzed Suzuki-type cross-coupling of boronic acids with epoxides without an exogenous base and with broad substrate scope has been developed. The product selectivity of styrenyl epoxides is different from that of previous work. NiFe 2 O 4 @SiO 2 @ZrO 2 /SO 4 2− /Cu/Co nanoparticles: a novel, efficient, magnetically recyclable and bimetallic catalyst for Pd-free Suzuki, Heck and C–N cross-coupling reactions in aqueous media†. Much effort has been devoted to developing new methods using Ni catalysts for the cross-coupling reaction of alkyl electrophiles with organometallic reagents, and significant achievements in this area have emerged during the past two decades. Nickel catalysts have enabled the coupling reaction of not only primary alkyl electrophiles, but also sterically hindered secondary and tertiary alkyl.