Synthesis of New 3-Substituted 1-Hydroxy-2-phenylindoles Using Sulfur-Containing Nucleophiles
作者:Sang Hyup Lee、Hyejin Kim
DOI:10.3987/com-16-13544
日期:——
The synthesis of new 3-[(acyl(or alkyl)thio)methyl]-1-hydroxy-2-phenylindoles 1 are presented. The substrates 2 obtained by each efficient three-step synthesis were treated, in the presence of SnCl2 center dot 2H(2)O, with nucleophiles such as thiocarboxylic acids and thiols to provide target compounds 1 by successive processes of nitro reduction and intramolecular condensation, followed by addition of nucleophile. Analyses of the reaction mechanism, including the effects of substituents along with the reactivity of nucleophiles, are described.
Ionic Diamine Rhodium Complex Catalyzed Reductive N-Heterocyclization of 2-Nitrovinylarenes
作者:Kazumi Okuro、Joanna Gurnham、Howard Alper
DOI:10.1021/jo200320k
日期:2011.6.3
Ionic diamine rhodiumcomplex (1) catalyzes the reductive N-cyclization of 2-vinylnitroarenes using carbon monoxide as a reducing agent to afford functionalized indoles. The catalytic system allows direct access to indoles with ester and ketone groups at the 2- or 3-position, in good yields.