title: Expeditious synthesis of phenanthrenes via CuBr2-catalyzed coupling of terminal alkynes and N-tosylhydrazones derived from o-formyl biphenyls.
abstract: A new method for the synthesis of phenanthrenes via ligand-free CuBr(2)-catalyzed coupling/cyclization of terminal alkynes with N-tosylhydrazones derived from o-formyl biphenyls has been developed. This new synthesis has wide range of functional group compatibility.
authors.affiliation: Beijing National Laboratory of Molecular Sciences (BNLMS), College of Chemistry, Peking University, Beijing 100871, China.
authors.forename: Fei
authors.initials: F
authors.lastname: Ye
authors.forename: Yi
authors.initials: Y
authors.lastname: Shi
authors.forename: Lei
authors.initials: L
authors.lastname: Zhou
authors.forename: Qing
authors.initials: Q
authors.lastname: Xiao
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhang
authors.forename: Jianbo
authors.initials: J
authors.lastname: Wang
mesh_terms: D000480:Alkynes / Q000138:chemical synthesis*; D001713:Biphenyl Compounds / Q000737:chemistry*; D001965:Bromides / Q000737:chemistry*; D002384:Catalysis; D003300:Copper / Q000737:chemistry*; D003500:Cyclization; D006835:Hydrazones / Q000138:chemical synthesis*; D015394:Molecular Structure; D010616:Phenanthrenes / Q000138:chemical synthesis*
chemical_list: D000480:Alkynes; D001713:Biphenyl Compounds; D001965:Bromides; D003300:Copper; D006835:Hydrazones; D010616:Phenanthrenes; C408079:cupric bromide; C010574:biphenyl