32954-65-7Relevant articles and documents
Rhodium-Catalyzed Annulation of N-Acetoxyacetanilide with Substituted Alkynes: Conversion of Nitroarenes to Substituted Indoles
Ghorai, Jayanta,Ramachandran, Kuppan,Anbarasan, Pazhamalai
, p. 14812 - 14825 (2021/10/25)
A general and efficient rhodium-catalyzed redox-neutral annulation of N-acetoxyacetanilides, readily accessible from nitroarenes, with alkynes has been accomplished for the synthesis of substituted indole derivatives. A wide range of substituted 2,3-diarylindoles were achieved from various substituted N-acetoxyacetanilides and symmetrical/unsymmetrical alkynes in good to excellent yields. The developed method was successfully integrated with the synthesis of N-acetoxyacetanilides for the efficient one-pot synthesis of indoles from nitroarenes. The important features are the introduction of N-acetoxyacetamide as a new directing group, redox-neutral annulation, an additive-free approach, wide functional group tolerance, an intramolecular version, and a one-pot reaction of nitroarenes. The method was further extended to the synthesis of potent higher analogues of indole, viz., pyrrolo[3,2-f]indoles and dibenzo[a,c]carbazoles. In addition, a plausible mechanism was proposed based on the isolation and stoichiometric study of a potential aryl-Rh intermediate.
Indium-mediated one-pot reductive conversion of nitroarenes to N-arylacetamides
Kim, Byeong Hyo,Han, Rongbi,Piao, Fengyu,Jun, Young Moo,Baik, Woonphil,Lee, Byung Min
, p. 77 - 79 (2007/10/03)
N-Arylacetamides were prepared in excellent yields from nitroarenes in the presence of acetic anhydride, acetic acid and indium by a one-pot procedure.
A novel one pot reductive acetylation of nitroarenes
Baruah
, p. 300 - 303 (2007/10/03)
Nitroarenes are reductively acetylated in one pot to the corres, ponding N-arylacetamides and N-(acetyloxy)-N-arylacetamides with Zn and Ac2O in presence of acidic Al2O3 in dichloromethane at room temperature.