The first applications of carbene ligands in cross-couplings of alkyl electrophiles: sonogashira reactions of unactivated alkyl bromides and iodides |
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Authors: | Eckhardt Matthias Fu Gregory C |
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Affiliation: | Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. |
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Abstract: | A Pd/N-heterocyclic carbene-based catalyst achieves the Sonogashira coupling of an array of functionalized, beta-hydrogen-containing alkyl bromides and iodides under mild conditions. By furnishing the first example of a nonphosphine-based palladium catalyst for cross-coupling unactivated alkyl electrophiles, this study provides an impetus for future efforts at catalyst development that extend beyond phosphine ligands. |
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