The Ni-catalyzed reaction of ortho-fluoro-substituted aromatic amides with alkynes results in C-F/N-H annulation to give 1(2H)-isoquinolinones. A key to the success of the reaction is the use of KOBut or even weak base, such as Cs2CO3. The reaction proceeds in the absence of a ligand and under mild reaction conditions (40-60 °C). Competition experiments and DFT calculations suggest that the pathway
Nickel-Catalyzed Cross-Electrophile Coupling between C(sp<sup>2</sup>)–F and C(sp<sup>2</sup>)–Cl Bonds by the Reaction of <i>ortho</i>-Fluoro-Aromatic Amides with Aryl Chlorides
作者:Itsuki Nohira、Naoto Chatani
DOI:10.1021/acscatal.1c01102
日期:2021.4.16
between C(sp2)–Fbonds in ortho-fluoro-substituted aromatic amides and C(sp2)–Cl bonds in aryl chlorides in the presence of Zn as a reductant and LiOtBu as a base, and LiCl and ZnCl2 as additives is reported. The reaction displayed excellent functional group tolerance and a broad substrate scope. The reaction was also applicable to cross-electrophile coupling between C(sp2)–F and C(sp2)–O bonds in an
在锌为还原剂和LiO t Bu为原子的情况下,邻氟取代的芳族酰胺中的C(sp 2)-F键与芳基氯中的C(sp 2)-Cl键之间的镍催化交叉亲电子偶联。据报道,LiCl和ZnCl 2作为添加剂。该反应显示出优异的官能团耐受性和广泛的底物范围。该反应也适用于甲苯磺酸芳基酯和三氟甲磺酸酯衍生物中C(sp 2)–F和C(sp 2)–O键之间的亲电子交联。