Ligand-Enabled Cross-Coupling of C(sp3)–H Bonds with Arylsilanes
摘要:
Pd(II)-catalyzed cross-coupling of C(sp(3))-H bonds with organosilicon coupling partners has been achieved for the first time. The use of a newly developed quinoline-based ligand is essential for the cross-coupling reactions to proceed.
The palladium(II)‐catalyzedβ‐ and γ‐alkynylation of amide C(sp3)−H bonds is enabled by pyridine‐based ligands. This alkynylation reaction is compatible with substrates containing α‐tertiary or α‐quaternary carbon centers. The β‐methylene C(sp3)−H bonds of various carbocyclic rings were also successfully alkynylated.
Palladium(0)-Catalyzed Alkynylation of C(sp<sup>3</sup>)–H Bonds
作者:Jian He、Masayuki Wasa、Kelvin S. L. Chan、Jin-Quan Yu
DOI:10.1021/ja400648w
日期:2013.3.6
The alkynylation of β-C(sp(3))-H bonds in aliphatic amides with alkynyl halides has been enabled using Pd(0)/N-heterocyclic carbene (NHC) and Pd(0)/phosphine (PR3) catalysts. This is the first example of utilizing [AlkynylPd(II)L(n)] complexes to activate C(sp(3))-H bonds.