Zirconium-Redox-Shuttled Cross-Electrophile Coupling of Aromatic and Heteroaromatic Halides.
Zirconium-Redox-Shuttled Cross-Electrophile Coupling of Aromatic and Heteroaromatic Halides.
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DOI:
10.1016/j.chempr.2021.06.007
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发表时间:
2021-07-08
期刊:
影响因子:
23.5
通讯作者:
Ye B
中科院分区:
文献类型:
--
作者:
Wu TF;Zhang YJ;Fu Y;Liu FJ;Tang JT;Liu P;Toste FD;Ye B
Transition metal-catalyzed cross-electrophile coupling (XEC) is a powerful tool for forging C(sp2)-C(sp2) bonds in biaryl molecules from abundant aromatic halides. While syntheses of unsymmetrical biaryl compounds through multimetallic XEC is of high synthetic value, selective XEC of two heteroaromatic halides remains elusive and challenging. Herein we report a homogeneous XEC method which relies on a zirconaaziridine complex as a shuttle for dual palladium catalyzed processes. The zirconaaziridine-mediated palladium (ZAPd) catalyzed reaction shows excellent compatibility with various functional groups and diverse heteroaromatic scaffolds. In accord with density functional theory (DFT) calculations, a redox-transmetallation between the oxidative addition product and the zirconaaziridine is proposed as the crucial elementary step. Thus, cross-coupling selectivity using a single transition metal catalyst is controlled by the relative rate of oxidative addition of Pd(0) into the aromatic halide. Overall, the concept of a combined reducing and transmetallating agent offers opportunities for development of transition-metal reductive coupling catalysis. Heterocycles are ubiquitous in bioactive molecules. Construction of heteroaromatic scaffolds, which has mainly relied on classical cross-coupling reactions, remains challenging. Here, Ye, Toste and coworkers describe a complementary approach to these compounds using a cross-electrophile coupling (XEC) enabled by a dual palladium catalysis in the presence of zirconaaziridine as an aryl shuttling platform. High cross selectivity and functional group compatibilities highlights the utility of this protocol. Both DFT and experimental studies support redox-transmetallation as a crucial elementary step.
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影响因子:
15
作者:
Biswas S;Weix DJ
通讯作者:
Weix DJ
影响因子:
16.6
作者:
Fyfe, James W. B.;Fazakerley, Neal J.;Watson, Allan J. B.
通讯作者:
Watson, Allan J. B.
DOI:
10.1002/anie.202010631
发表时间:
2021-05-10
期刊:
Angewandte Chemie (International ed. in English)
影响因子:
--
作者:
Cook XAF;de Gombert A;McKnight J;Pantaine LRE;Willis MC
通讯作者:
Willis MC
影响因子:
56.9
作者:
BROENE, RD;BUCHWALD, SL
通讯作者:
BUCHWALD, SL
影响因子:
12.9
作者:
Haas, Diana;Hammann, Jeffrey M.;Knochel, Paul
通讯作者:
Knochel, Paul