title: Rh-Catalysed direct cyclisation of 1,4-naphthoquinone and 9,10-phenanthraquinone with alkyne: facile access to 1,8-dioxapyrenes and 1,12-dioxaperylenes as orange and red-emitting luminophores.
abstract: Rh-catalysed direct cyclisation of 1,4-naphthoquinones and 9,10-phenanthraquinones with alkynes has been accomplished for the first time through the C-H activation strategy to forge 1,8-dioxapyrenes and 1,12-dioxaperylenes. Starting from readily available substrates, a variety of dipyran-containing PAHs are obtained in one step and exhibit orange/red-emitting performance, large Stokes shifts and high thermal stability.
authors.affiliation: Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, and State Key Laboratory of Biotherapy, West China Medical School, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China. jingbolan@scu.edu.cn jsyou@scu.edu.cn.
authors.forename: Jing
authors.initials: J
authors.lastname: Wang
authors.forename: Dekun
authors.initials: D
authors.lastname: Qin
authors.forename: Jingbo
authors.initials: J
authors.lastname: Lan
authors.forename: Yangyang
authors.initials: Y
authors.lastname: Cheng
authors.forename: Shuai
authors.initials: S
authors.lastname: Zhang
authors.forename: Qiang
authors.initials: Q
authors.lastname: Guo
authors.forename: Jie
authors.initials: J
authors.lastname: Wu
authors.forename: Di
authors.initials: D
authors.lastname: Wu
authors.forename: Jingsong
authors.initials: J
authors.lastname: You