Direct photochemical cross-coupling between aliphatic acids and BF<sub>3</sub>K salts
作者:Zhuming Sun、Bingqing Tang、Kevin K.-C. Liu、Hugh Y. Zhu
DOI:10.1039/c9cc09164e
日期:——
We describe a novel photoredox hetero-coupling reaction of two C (sp3) radicals from aliphatic acids or BF3K salts. The kinetic differences in radical persistence provide cross-selectivity, using an organic photoredox catalyst and an oxidant with visible light. This method exhibits broad scope, including several examples constructing sterically hindered C(sp3)-C(sp3) bonds.
The present invention relates to compounds that inhibit at least one of KRas G12A, KRas G12C, KRas G12D, KRas G12R, KRas G12S, KRas G12V, KRas G13D and KRas Q61H, pharmaceutical compositions comprising the compounds and methods of use therefor.
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
Harnessing the Intrinsic Reactivity of 2‐Cyano‐Substituted Heteroarenes to Achieve Programmable Double Alkylation
作者:Zhuming Sun、Jichen Zhao、Huiwen Deng、Li Tian、Bingqing Tang、Kevin K.‐C. Liu、Hugh Y. Zhu
DOI:10.1002/adsc.201901139
日期:2020.4.8
the ipso‐ or the para‐ positions of the cyano groups. Synthesis of a variety of α‐tertiary amines containing quaternary centers is described. The approach enables regioselective sequential double alkylation on either 2‐cyanopyridine or 2‐cyanopyrimidine with high efficiency. Our report illustrates the synthetic utility of α‐heteroatom‐substituted tertiary radicals in the synthesis of substituted heteroarenes