Palladium-catalyzed intramolecular oxidative alkylation of 4-pentenyl β-dicarbonyl compounds
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-
Liu, Cong,Wang, Xiang,Pei, Tao,Widenhoefer, Ross A.
p. 6343 - 6352
(2007/10/03)
Palladium-catalyzed intramolecular oxidative alkylation of unactivated olefins
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
Pei, Tao,Wang, Xiang,Widenhoefer, Ross A.
p. 648 - 649
(2007/10/03)
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