title: Synthesis of cyclopentenes, pyrroles, and thiophenes via a sequence of propargyl-allenyl isomerizations, michael additions, and intramolecular Wittig reactions.
abstract: Allenylphosphonium species, reactive Michael acceptors, could be generated from simple, readily available propargylphosphonium salts through propargyl-allenyl isomerization. We developed an efficient synthesis for cyclopentenes, pyrroles, and thiophenes via a sequence of propargyl-allenyl isomerizations, Michael additions, and intramolecular Wittig reactions.
authors.affiliation: Department of Chemistry, Zhejiang University (Campus Xixi) , Hangzhou 310028, People's Republic of China.
authors.forename: Guoqing
authors.initials: G
authors.lastname: Zhao
authors.forename: Qianyun
authors.initials: Q
authors.lastname: Zhang
authors.forename: Hongwei
authors.initials: H
authors.lastname: Zhou
mesh_terms: D002384:Catalysis; D003500:Cyclization; D003517:Cyclopentanes / Q000138:chemical synthesis* / Q000737:chemistry; D007536:Isomerism; D015394:Molecular Structure; D010293:Pargyline / Q000031:analogs & derivatives* / Q000737:chemistry*; D011758:Pyrroles / Q000138:chemical synthesis* / Q000737:chemistry; D013237:Stereoisomerism; D013876:Thiophenes / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D003517:Cyclopentanes; D011758:Pyrroles; D013876:Thiophenes; D010293:Pargyline