[RuCl<sub>2</sub>(<i>p-</i>cymene)]<sub>2</sub>-Catalyzed Conjugate Addition of Arylboronic Acids to α,β-Unsaturated Ketones under Ligand-Free and Neutral Conditions
作者:Lei Zhang、Xiaomin Xie、Lei Fu、Zhaoguo Zhang
DOI:10.1021/jo4001367
日期:2013.4.5
A simple and efficient Ru-catalyzed conjugate addition reaction of arylboronic acids to α,β-unsaturated ketones under neutral conditions without any additional ligands has been developed. This Ru(II)-catalytic system both fulfilled the inhibition of the β-hydride elimination in the catalytic cycle and minimized the protonolysis of arylboronic acids.
report visible-light-driven hydroacylation of unactivatedalkenes. We employed benzimidazolines as new acyl donors and achieved perfect regioselectivity, high functional-group tolerance, and excellent substrate generality. We also performed mechanistic experiments to elucidate the detailed reaction mechanism. This is the first example of (1) hydroacylation of unactivatedalkenes using (2) easily prepared
A sustainable sequential multicomponent method for the synthesis of highly functionalized quinolines from renewable starting materials was shown via manganese catalysis. The synthesized quinoline derivatives were further utilized to prepare new type of quinoline derived azafluorenes via unprecedented direct C(sp3)−H bond hydroxylation and Friedel–Crafts-type annulation.