title: Asymmetric synthesis and photophysical properties of benzopyrano- or naphthopyrano-fused helical phosphafluorenes.
abstract: Enantioenriched benzopyrano- and naphthopyrano-fused helical phosphafluorenes have been synthesized by the rhodium-catalyzed enantioselective double [2 + 2 + 2] cycloaddition of dialkynyl phosphorus compounds with phenol- or naphthol-linked tetraynes. Photophysical properties of these phosphafluorenes are also disclosed.
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, and Instrumentation Analysis Center, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan.
authors.forename: Naohiro
authors.initials: N
authors.lastname: Fukawa
authors.forename: Takuya
authors.initials: T
authors.lastname: Osaka
authors.forename: Keiichi
authors.initials: K
authors.lastname: Noguchi
authors.forename: Ken
authors.initials: K
authors.lastname: Tanaka
mesh_terms: D000480:Alkynes / Q000737:chemistry*; D002384:Catalysis; D018360:Crystallography, X-Ray; D003500:Cyclization; D006576:Heterocyclic Compounds, 4 or More Rings / Q000138:chemical synthesis* / Q000737:chemistry; D008958:Models, Molecular; D015394:Molecular Structure; D009284:Naphthols / Q000737:chemistry; D009943:Organophosphorus Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D010636:Phenols / Q000737:chemistry; D010777:Photochemistry; D012238:Rhodium / Q000737:chemistry; D013237:Stereoisomerism
chemical_list: D000480:Alkynes; D006576:Heterocyclic Compounds, 4 or More Rings; D009284:Naphthols; D009943:Organophosphorus Compounds; D010636:Phenols; D012238:Rhodium