An Access to Benzo[<i>a</i>]fluorenes, Benzo[<i>b</i>]fluorenes, and Indenes Triggered by Simple Lewis Acid
作者:Dakoju Ravi Kishore、Komal Goel、Chander Shekhar、Gedu Satyanarayana
DOI:10.1021/acs.joc.1c02724
日期:2022.3.4
cycloaromatization of 1,7-ynones toward synthesizing structurally diverse benzofluorene scaffolds. Remarkably, the present protocol promotes the formation of two consecutive C–C bonds intramolecularly and undergoes aromatization under mild reaction conditions to afford the tetracyclic benzo[a]fluorene frameworks. Besides, the formation of indenes was observed when 1-bromo-2-iodoarenes are relatively