General Synthesis of Polysubstituted Benzo[<i>b</i>]furans
作者:Alan R. Katritzky、Clara N. Fali、Jianqing Li
DOI:10.1021/jo9710846
日期:1997.11.1
2-(benzotriazol-1-ylmethyl)benzo[b]furan (12). The benzotriazolyl-CH(2) side chain of 12 was further elaborated by (i) alkylation with trans-cinnamaldehyde to give the adduct 14, followed by intramolecular cyclization to give dibenzofuran 17; (ii) alkylation with benzyl bromide followed by elimination or nucleophilic displacement of the benzotriazolyl moiety with Grignard reagent and subsequent dehydrogenation