title: Construction of fused- and spiro-oxa-[n.2.1] skeletons by a tandem epoxide rearrangement/intramolecular [3+2] cycloaddition of cyclopropanes with carbonyls.
abstract: A Lewis acid promoted tandem reaction of epoxide rearrangement and intramolecular [3+2] cycloaddition reaction of cyclopropanes with carbonyls formed by epoxide rearrangement in situ, which were obtained with difficulty by a general method, is reported. A wide variety of fused- and spiro-oxa-[n.2.1] skeletons could be efficiently constructed.
authors.affiliation: State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China. caoxplzu@163.com shizf@lzu.edu.cn.
authors.forename: Lu-Feng
authors.initials: LF
authors.lastname: Wang
authors.forename: Zi-Fa
authors.initials: ZF
authors.lastname: Shi
authors.forename: Xiao-Ping
authors.initials: XP
authors.lastname: Cao
authors.forename: Bao-Sheng
authors.initials: BS
authors.lastname: Li
authors.forename: Peng
authors.initials: P
authors.lastname: An