A well-defined iron catalyst with high efficiency for Suzuki–Miyaura coupling involving C(sp3) partners is described. In the presence of a lithium amide base, this catalyst enabled, for the first time, C(sp3)−C(sp2) coupling of 1°, 2°, and 3° alkyl halides and (hetero)aryl boronic esters as well as C(sp3)−C(sp3) coupling of 1° and 2° alkyl halides and 1° and 2° alkyl boranes under mild conditions and
作者:Michiyuki, Takuya、Homölle, Simon L.、Pandit, Neeraj K.、Ackermann, Lutz
DOI:10.1002/anie.202401198
日期:——
A formal C(sp2)−H alkylation via the dibenzothiophenylation/nickel-catalyzed eXEC sequence is presented. The first activation step selectively gives aryldibenzothiophenium salts, which are subsequently engaged in electroreductive nickel catalysis. The method provides various C(sp2)−C(sp3) linkages with high sp3-hybridized carbon contents. The demonstration of one-pot alkylations further reinforces
Dinuclear Iron Complex-Catalyzed Cross-Coupling of Primary Alkyl Fluorides with Aryl Grignard Reagents
作者:Zhenbo Mo、Qiang Zhang、Liang Deng
DOI:10.1021/om300722g
日期:2012.9.24
Iron-catalyzed cross-coupling of nonactivated primary alkylfluorides with aryl Grignardreagents has been achieved by using the low-coordinate dinuclear iron complex [(IPr2Me2)Fe(μ2-NDipp)2Fe(IPr2Me2)] as the catalyst. This iron-catalyzed C(sp3)–F bond arylation reaction is applicable to a variety of aryl Grignardreagents and primary alkylfluorides. The product pattern suggests the involvement of a