Selective C−S Bond Formation via Fe-Catalyzed Allylic Substitution
作者:Markus Jegelka、Bernd Plietker
DOI:10.1021/ol901297s
日期:2009.8.6
In contrast to the formation of C−O and C−N bonds it was only recently that the selective C−Sbondformation by means of transition metal complexes moved more into the center of research. This is somewhat surprising given the fact that the sulfur atom in a functional group can possess different oxygenation levels which correspond to different chemical properties and reaction portfolios. Herein we wish
Iron-Catalyzed C-Allylating Partial Dearomatization of Naphthols
作者:Bernd Plietker、Berenice Heid
DOI:10.1055/s-0035-1560909
日期:——
The iron complex Bu4N[Fe(CO)(3)(NO)](TBA[Fe]) catalyzes the intermolecular allylation of naphthol derivatives to give the corresponding partially dearomatized allylated chromenones in good to excellent yields. The scope and limitations are reported. An efficient decarboxylative intramolecular C- allylation, starting from allyl naphthyl carbonates, was developed. From a mechanistic point of view, the overall process is the result of a fast O- allylation followed by a sigmatropic rearrangement to the desired product.