Condensation of 2-methylindole with acetophenones: An unexpected formation of 2-arylanilines
作者:Wayland E. Noland、Alexei V. Novikov、Christopher D. Brown
DOI:10.1080/00397911.2019.1672745
日期:2019.12.17
Abstract 2-Methylindole condenses with acetophenones under acidic conditions to produce 2-arylanilines in moderate to good yields. The reaction proceeds well with a range of 3′- and 4′- substituted acetophenones (fluoro-, chloro-, bromo-, iodo-, methyl, methoxy), and select 2′- substituted ones (fluoro-, methoxy-). No products were obtained with nitro- substitution in any position. GRAPHICAL ABSTRACT
An efficient route to 2,3-disubstituted indoles was developed via reductive alkylation of 2-substitutedindoles using hydrogen as a clean and atom economic reductant under ambient pressure.