title: Phase-transfer-catalyzed cyclization reaction of nucleophilic addition to electron-deficient 1,3-conjugated enynes for the synthesis of functionalized 4H-pyrans.
abstract: A variety of substituted 4H-pyrans are readily prepared in moderate to good yields under the mild reaction conditions by nucleophilic addition to electron-deficient 1,3-conjugated enynes with phase-transfer catalysis (PTC).
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, 730000, P. R. China.
authors.forename: Jie
authors.initials: J
authors.lastname: Hu
authors.forename: Lei
authors.initials: L
authors.lastname: Liu
authors.forename: Shangdong
authors.initials: S
authors.lastname: Yang
authors.forename: Yong-Min
authors.initials: YM
authors.lastname: Liang
mesh_terms: D002384:Catalysis; D003500:Cyclization; D004583:Electrons; D008958:Models, Molecular; D015394:Molecular Structure; D044367:Phase Transition; D011714:Pyrans / Q000138:chemical synthesis*
chemical_list: D011714:Pyrans