title: Efficient construction of oxa- and aza-[n.2.1] skeletons: Lewis acid catalyzed intramolecular [3+2] cycloaddition of cyclopropane 1,1-diesters with carbonyls and imines.
authors.affiliation: State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. China.
authors.forename: Siyang
authors.initials: S
authors.lastname: Xing
authors.forename: Wenyan
authors.initials: W
authors.lastname: Pan
authors.forename: Chang
authors.initials: C
authors.lastname: Liu
authors.forename: Jun
authors.initials: J
authors.lastname: Ren
authors.forename: Zhongwen
authors.initials: Z
authors.lastname: Wang