Copper-Catalyzed Cross-Coupling of Functionalized Alkyl Halides and Tosylates with Secondary and Tertiary Alkyl Grignard Reagents
作者:Peng Ren、Lucas-Alexandre Stern、Xile Hu
DOI:10.1002/anie.201204275
日期:2012.9.3
Added value: A copper‐based method is highly efficient for the cross‐coupling of alkyl electrophiles with secondary and tertiary alkylGrignardreagents. The method is distinguished by its broad substrate scope and high functional group tolerance.
A lignanskeleton is prepared in good yield through desulfurization of 3,4-dibenzyl-thiophene or 2,5-diaryl-3,4-dimethylthiophenes which are obtained by the nickel- or palladium-phosphine complex catalyzed Grignard cross-coupling reaction of halothiophenes.