title: A Sc(OTf)3-catalyzed cascade reaction of o-aminoacetophenone with methanamine: construction of dibenzo[b,h][1,6]naphthyridine derivatives.
abstract: An unexpected Sc(OTf)3-catalyzed and air-mediated cascade reaction of o-aminoacetophenones with methanamines was discovered as an efficient synthetic approach to a novel class of fluorescent fused-four-ring dibenzo[b,h][1,6]naphthyridine derivatives. Two possible mechanisms of the reaction were proposed. The photophysical properties of the dibenzo[b,h][1,6]naphthyridine were initially considered.
authors.affiliation: Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China. wanglimin@ecust.edu.cn.
authors.forename: Dan
authors.initials: D
authors.lastname: Mao
authors.forename: Jun
authors.initials: J
authors.lastname: Tang
authors.forename: Wenbo
authors.initials: W
authors.lastname: Wang
authors.forename: Xin
authors.initials: X
authors.lastname: Liu
authors.forename: Shengying
authors.initials: S
authors.lastname: Wu
authors.forename: Jianjun
authors.initials: J
authors.lastname: Yu
authors.forename: Limin
authors.initials: L
authors.lastname: Wang