Ligand design for Rh(<scp>iii</scp>)-catalyzed C–H activation: an unsymmetrical cyclopentadienyl group enables a regioselective synthesis of dihydroisoquinolones
作者:Todd K. Hyster、Derek M. Dalton、Tomislav Rovis
DOI:10.1039/c4sc02590c
日期:——
A modified cyclopentadienyl ligand greatly improves regioselectivity in Rh(iii) catalyzed alkene insertion/C–H activation.
Amidate Complexes of Tantalum and Niobium for the Hydroaminoalkylation of Unactivated Alkenes
作者:Jean Michel Lauzon、Patrick Eisenberger、Sorin-Claudiu Roşca、Laurel L. Schafer
DOI:10.1021/acscatal.7b01293
日期:2017.9.1
A series of mono(amidate) Ta and Nb complexes with varying steric and electronic properties were synthesized. These complexes were screened as precatalysts for the hydroaminoalkylation of alkenes with secondary amines. Sterically demanding mono(amidate) Ta complexes were determined to be the most effective precatalysts. Isotopic labeling and kinetic studies were undertaken in an effort to elucidate
Here we disclose a general Co(II/III/IV) electrocatalytic platform for alkene functionalization. Driven by electricity, a set of the oxidative hydrofunctionalization reactions via hydrogen atom transfer were demonstrated without the need for stochiometric chemical oxidants. The scope of the reactions encompasses hydroalkoxylation, hydroacyloxylation, hydroarylation, semipinacol rearrangement, and deallylation
A General and Efficient Solution to Monofluoroalkylation: Divergent Synthesis of Aliphatic Monofluorides with Modular Synthetic Scaffolds
作者:Bing‐Bing Wu、Jie Xu、Qian Gao、Kang‐Jie Bian、Guo‐Kai Liu、Xi‐Sheng Wang
DOI:10.1002/anie.202208938
日期:2022.9.5
A general method allows preparation of diverse monofluorides based on the monofluoroalkyl triflate scaffold. Both nickel-catalyzed hydromonofluoroalkylation of unactivated alkenes and copper-catalyzed monofluoroalkylation of Grignard reagents were studied. Further utilities including conversion into conventional fluoroalkylating reagents and construction of monofluoro-alkoxy, -alkylamino motifs.