Triazole-Assisted Ruthenium-Catalyzed CH Arylation of Aromatic Amides
作者:Hamad H. Al Mamari、Emelyne Diers、Lutz Ackermann
DOI:10.1002/chem.201403019
日期:2014.7.28
heteroarenes, as well as alkenes, by using easy‐to‐handle aryl bromides as the arylating reagents. The triazole‐assisted CH activation strategy was found to be widely applicable, to occur under mildreaction conditions, and the catalytic system was tolerant of important electrophilic functionalities. Notably, the flexible triazole‐based auxiliary proved to be a more potent directing group for the optimized
Iron-Catalyzed C(sp<sup>2</sup>)H and C(sp<sup>3</sup>)H Arylation by Triazole Assistance
作者:Qing Gu、Hamad H. Al Mamari、Karolina Graczyk、Emelyne Diers、Lutz Ackermann
DOI:10.1002/anie.201311024
日期:2014.4.7
Modular 1,2,3‐triazoles enabled iron‐catalyzed CHarylations with broad scope. The novel triazole‐based bidentate auxiliary is easily accessible in a highly modular fashion and allowed for user‐friendly iron‐catalyzed C(sp2)H functionalizations of arenes and alkenes with excellent chemo‐ and diastereoselectivities. The versatile iron catalyst also proved applicable for challenging C(sp3)H functionalizations
Iron-Catalyzed C(sp<sup>2</sup>)H and C(sp<sup>3</sup>)H Methylations of Amides and Anilides
作者:Karolina Graczyk、Tobias Haven、Lutz Ackermann
DOI:10.1002/chem.201501134
日期:2015.6.8
bioactivities and physical properties of pharmacologically active drugs. Direct introduction of the methyl group by CH activation was accomplished with a versatile iron catalyst, which enabled the CH methylation of (hetero)benzamides, anilides, alkenes, and even alkanes by triazoleassistance in a chemo‐, site‐ and diastereo‐selective fashion.
Versatile palladium-catalyzed CH arylations of benzamides were accomplished by triazole amine (TAM) assistance. The robustness of the palladium-catalyzed CH functionalization protocol was reflected by its broad functional group tolerance, ample substrate scope and CH arylations under silver-free reaction conditions.