79482-22-7Relevant academic research and scientific papers
Yb(OTf)3-promoted ZnCl2-catalyzed conia-ene reaction of linear β-alkynic β-dicarbonyls
Liu, Yu,Song, Ren-Jie,Li, Jin-Heng
experimental part, p. 3663 - 3669 (2010/12/20)
An atom-economical and solvent-free ytterbium(III) triflate promoted, zinc(II) chloride catalyzed Conia-ene method has been developed for the construction of five- to six-membered-ring carbocycles. In the presence of zinc(II) chloride and ytterbium(III) triflate, a variety of linear β-alkynic β-keto esters and -alkynic -diketones were cyclized under neat conditions in moderate to good yields. It is noteworthy that the selectivity toward five- or six-membered-ring carbocycles depends on substituents at the terminal alkynes. Georg Thieme Verlag Stuttgart.
Palladium-catalyzed intramolecular oxidative alkylation of 4-pentenyl β-dicarbonyl compounds
Liu, Cong,Wang, Xiang,Pei, Tao,Widenhoefer, Ross A.
, p. 6343 - 6352 (2007/10/03)
Reaction of 8-nonene-2,4-dione with a catalytic amount of [PdCl 2(CH3CN)2] (2; 5 mol%) and a stoichiometric amount of CuCl2 (2.5 equiv) at room temperature for 3 h led to oxidative alkylation and formation of 2-
Palladium-catalyzed intramolecular oxidative alkylation of unactivated olefins
Pei, Tao,Wang, Xiang,Widenhoefer, Ross A.
, p. 648 - 649 (2007/10/03)
Reaction of 5,5-dimethyl-8-nonene-2,4-dione catalyzed by PdCl2(CH3CN)2 (5 mol %) in the presence of CuCl2 (2.5 equiv) at room temperature for 3 h formed 2-acetyl-3,6,6-trimethyl-2-cyclohexenone in 96% isolated yield. Palladium-catalyzed intramolecular oxidative alkylation tolerated a range of substitution and was applicable to the synthesis of spirobicyclic compounds and to the cyclization of ζ-alkenyl β-keto esters. Copyright
Synthesis and Photocyclization of 2-Aroyl-3-methylcyclohex-2-enones
Tamura, Yasumitsu,Wada, Akimori,Okuyama, Shigehiro,Fukumori, Satoshi,Hayashi, Yoko,et al.
, p. 1312 - 1320 (2007/10/02)
Preparation and photocyclization of a number of 2-aroyl-3-methylcyclohex-2-enones have been investigated.Irradiation of these systems resulted in a photo-enolization followed by a pericyclic reaction to give 3,4-dihydroanthracen-1(2H)-ones.Keywords - prep
