Unlocking Tertiary Acids for Metallaphotoredox C(sp<sup>2</sup>)–C(sp<sup>3</sup>) Decarboxylative Cross-Couplings
作者:Junqing Guo、Derek Norris、Antonio Ramirez、Jack L. Sloane、Eric M. Simmons、Jacob M. Ganley、Martins S. Oderinde、T. G. Murali Dhar、Geraint H. M. Davies、Trevor C. Sherwood
DOI:10.1021/acscatal.3c03353
日期:2023.9.15
Dual nickel photoredox catalysis conditions have been developed for the decarboxylative cross-coupling of aryl halides and carboxylic acids containing fully substituted α-carbons, a valuable but challenging substrate class for C(sp2)–C(sp3) bond-forming reactions. High-throughput experimentation identified Ni(TMHD)2 as the optimal precatalyst for this reaction in contrast to the nickel-bipyridyl complexes
双镍光氧化还原催化条件已开发用于芳基卤化物和含有完全取代的 α-碳的羧酸的脱羧交叉偶联,这是 C(sp 2 )–C(sp 3 ) 键形成反应的有价值但具有挑战性的底物类别。高通量实验确定 Ni(TMHD) 2是该反应的最佳预催化剂,而脱羧偶联中通常使用的镍联吡啶络合物主要提供不需要的 C-O 产物。计算工作提供了对二酮酸镍配合物的 C-C 与 C-O 选择性的潜在机制基础的见解。