Nickel-catalyzed anti-Markovnikov hydroarylation of alkenes
作者:Julia Nguyen、Andrea Chong、Gojko Lalic
DOI:10.1039/c8sc05445b
日期:——
We have developed a nickel-catalyzed hydroarylation of alkenesusing aryl halides as coupling partners. Excellent anti-Markovnikov selectivity is achieved with aryl-substituted alkenes and enol ethers. We also show that hydroarylation occurs with alkyl substituted alkenes to yield linear products. Preliminary examination of the reaction mechanism suggests irreversible hydrometallation as the selectivity
One-pot synthesis of 1-alkyl-1H-indazoles from 1,1-dialkylhydrazones via aryne annulation
作者:Nataliya A. Markina、Anton V. Dubrovskiy、Richard C. Larock
DOI:10.1039/c2ob07117g
日期:——
The reaction of readily accessible 1,1-dialkylhydrazones with commercially available o-(trimethylsilyl)aryl triflates provides a direct one-step route to pharmaceutically important 1-alkylindazoles. The products are obtained in high yields by one-pot NCS-chlorination/aryne annulation or Ac2O-acylation/deprotection/aromatization protocols.