97815-03-7Relevant academic research and scientific papers
Enantioselective palladium-catalyzed dearomative cyclization for the efficient synthesis of terpenes and steroids
Du, Kang,Guo, Pan,Chen, Yuan,Cao, Zhen,Tang, Wenjun,Wang, Zheng
supporting information, p. 3033 - 3037 (2015/04/14)
A novel enantioselective palladium-catalyzed dearomative cyclization has been developed for the efficient construction of a series of chiral phenanthrenone derivatives bearing an all-carbon quaternary center. The effectiveness of this method in the synthe
Palladium(0)-catalyzed arylative dearomatization of phenols
Rousseaux, Sophie,Garcia-Fortanet, Jorge,Del Aguila Sanchez, Miguel Angel,Buchwald, Stephen L.
supporting information; experimental part, p. 9282 - 9285 (2011/08/04)
The palladium-catalyzed arylative dearomatization of phenols to yield spirocyclohexadienone products in good to excellent yields has been developed. Preliminary results demonstrate that the formation of the spirocyclic all-carbon quaternary center can be accomplished with high levels of enantiocontrol (up to 91% ee).
Highly efficient fluorine-promoted intramolecular condensation of benzo[c]phenanthrene: A new prospective on direct fullerene synthesis
Amsharov, Konstantin Yu.,Kabdulov, Mikhail A.,Jansen, Martin
experimental part, p. 6328 - 6335 (2011/03/19)
Various functional groups have been tested as alternative promoters of the intramolecular condensation of benzo-[c]phenanthrene under flash vacuum pyrolysis conditions. Methyl and fluorine functionalization were found to be promising approaches. Unexpectedly high selectivity was observed in the cyclization of fluorinated benzo[c]phenanthrenes. The mechanism for the condensation reaction and the advantages of fluorine as a promoter for the rational synthesis of fullerenes are discussed. Wiley-VCH Verlag GmbH & Co. KGaA.
HELICENES : SYNTHESE PHOTOCHIMIQUE DE FLUORO-1-PENTAHELICENES
Gorsane, M.,Martin, R. H.
, p. 205 - 214 (2007/10/02)
1-Fluoropentahelicene and substituted derivatives have been synthesized by the photocyclodehydrogenation of 1,2-di(2-naphtyl) ethylenes (1) and 3-styrylphenanthrenes (2).In two cases (1a and 2d) the photocyclisations gave rise to benzo perylenes (7, 8, 23, 24) a reaction involving either the loss (8, 24) or the fluorine atom.The 1H-NMR spectra are described.
