title: Vicinal bis(trifluoroacetimidoyl chloride)s: novel building blocks for the synthesis of benzo-fused eight-membered rings via [2 + 2 + 2] cycloadditions.
abstract: Vicinal bis(trifluoroacetimidoyl chloride)s, a novel kind of fluorinated building block, were obtained from o-phenylenediamines in the presence of TFA, triethylamine, triphenylphosphine and tetrachloromethane. Based on these blocks, a new synthesis involving [2 + 2 + 2] cycloaddition reactions for trifluoromethylated benzo-fused eight-membered rings was disclosed.
authors.affiliation: Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, 345 Lingling Road, Shanghai 200032, P.R. China. ymwu@sioc.ac.cn.
authors.forename: Lisi
authors.initials: L
authors.lastname: Zhang
authors.forename: Yajun
authors.initials: Y
authors.lastname: Li
authors.forename: Li
authors.initials: L
authors.lastname: Zhang
authors.forename: Yongming
authors.initials: Y
authors.lastname: Wu