108799-99-1Relevant articles and documents
Synthesis of 3-substituted indazoles from arynes and N-tosylhydrazones
Li, Pan,Zhao, Jingjing,Wu, Chunrui,Larock, Richard C.,Shi, Feng
body text, p. 3340 - 3343 (2011/09/12)
Readily available, stable, and inexpensive N-tosylhydrazones react with arynes under mild reaction conditions to afford 3-substituted indazoles in moderate to good yields. The reaction appears to involve a dipolar cycloaddition of in situ generated diazo
Pentavalent Organobismuth Reagents. Part 3. Phenylation of Enols and of Enolate and other Anions
Barton, Derek H. R.,Blazejewski, Jean-Claude,Charpiot, Brigitte,Finet, Jean-Pierre,Motherwell, William B.,et al.
, p. 2667 - 2676 (2007/10/02)
The phenylation of enols and of enolate anions of ketones, β-diketones and keto esters has been studied using a range of Bi reagents.Under basic conditions C-phenylation is observed and, even hindered, perphenylated compounds are easily synthesized.Under neutral and acidic conditions ordinary ketones do not react and enolic systems give O-phenylation.A number of other anions have been phenylated under basic conditions, including the key compound indole wich mainly gave 3-C-phenylation.All these reactions can be supposed to have one of two alternative mechanisms, which parallel the two mechanisms proposed for the phenylation of phenols.