title: Palladium(0)-catalyzed cyclization of 1,6-diyn-3-yl carbonates with a nucleophilic functionality: efficient synthesis of polycyclic benzo[b]fluorene derivatives via allene intermediates.
abstract: We report in this paper an interesting tandem reaction involving sequential palladium(0)-catalyzed decarboxylation of diynylic carbonates, intramolecular nucleophilic cyclization and Schmittel reaction, which provides a facile method for the synthesis of a variety of polycyclic benzo[b]fluorene derivatives from easily accessible starting materials.
authors.affiliation: Department of Chemistry, Zhejiang University, Hangzhou, PR China.
authors.forename: Shugao
authors.initials: S
authors.lastname: Zhu
authors.forename: Luling
authors.initials: L
authors.lastname: Wu
authors.forename: Xian
authors.initials: X
authors.lastname: Huang
mesh_terms: D002254:Carbonates / Q000737:chemistry*; D002384:Catalysis; D003500:Cyclization; D005449:Fluorenes / Q000138:chemical synthesis* / Q000737:chemistry; D008958:Models, Molecular; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry*; D011084:Polycyclic Aromatic Hydrocarbons / Q000138:chemical synthesis* / Q000737:chemistry; D013237:Stereoisomerism
chemical_list: D002254:Carbonates; D005449:Fluorenes; D009942:Organometallic Compounds; D011084:Polycyclic Aromatic Hydrocarbons; D010165:Palladium; C041512:benzo(b)fluorene