title: One-pot multistep synthesis of 4-acetoxy-2-amino-3-arylbenzofurans from 1-aryl-2-nitroethylenes and cyclohexane-1,3-diones.
abstract: [reaction: see text] A novel method for synthesizing 4-acetoxy-2-amino-3-arylbenzofurans (4) from 1-aryl-2-nitroethylenes (1) and cyclohexane-1,3-diones (2) is described. The method features one-pot operation of a solution of 1 and 2 in THF with catalytic Et3N (rt, 12 h) followed with Ac2O, Et3N, and DMAP (rt, 5 h), although the process consists of 13 elementary reactions.
authors.affiliation: School of Education, Okayama University, Tsushima, Okayama, 700-8530, Japan. teruhiko@cc.ikayama-u.ac.jp
authors.forename: Teruhiko
authors.initials: T
authors.lastname: Ishikawa
authors.forename: Tadashi
authors.initials: T
authors.lastname: Miyahara
authors.forename: Mami
authors.initials: M
authors.lastname: Asakura
authors.forename: Shuichi
authors.initials: S
authors.lastname: Higuchi
authors.forename: Yayoi
authors.initials: Y
authors.lastname: Miyauchi
authors.forename: Seiki
authors.initials: S
authors.lastname: Saito