102593-53-3Relevant articles and documents
Iridium-catalyzed annulative coupling of 2-arylbenzoyl chlorides with alkynes: Selective formation of phenanthrene derivatives
Nagata, Tomoya,Hirano, Koji,Satoh, Tetsuya,Miura, Masahiro
, p. 8960 - 8967 (2014)
2-Arylbenzoyl chlorides undergo annulative coupling with internal alkynes in the presence of a catalyst system of [IrCl(cod)]2/P(t-Bu)3 to selectively afford the corresponding phenanthrene derivatives accompanied by elimination of carbon monoxide and hydrogen chloride. The reaction occurs without addition of any external base. Deuterium-labeling experiments using 2-(d5-phenyl)benzoyl chloride suggest that the rate-determining step does not involve the C2′-H bond cleavage. Formation of a [(t-Bu)3PH][(biphenyl-2,2′-diyl)Ir(CO)Cl2] complex dimer, of which the structure was determined by single-crystal X-ray analysis, from a stoichiometric reaction at 60 °C without addition of alkyne also supports the facile C-H cleavage.
Rhodium-Catalyzed Oxidative Annulation of (2-Arylphenyl)boronic Acids with Alkynes: Selective Synthesis of Phenanthrene Derivatives
Nagata, Tomoya,Satoh, Tetsuya,Nishii, Yuji,Miura, Masahiro
, p. 1707 - 1710 (2016/07/06)
A rhodium-catalyzed annulative coupling of (2-arylphenyl)boronic acids with alkynes has been developed for the facile construction of phenanthrene frameworks. The reaction proceeded without external bases, and dioxygen worked as a terminal oxidant. Deuter
Synthesis of fluorenes via the palladium-catalyzed 5-exo-dig annulation of o-alkynylbiaryls
Chernyak, Natalia,Gevorgyan, Vladimir
scheme or table, p. 1101 - 1114 (2009/12/07)
The direct palladium-catalyzed intramolecular hydro arylation of o-alkynylbiaryls proceeded in a highly stereoselective manner producing fluorenes 2, the products of 5-exo-dig cyclization, in excellent yields. The cascade intermolecular arylation, incorpo
