68196-10-1Relevant academic research and scientific papers
Nitrile-assisted oxidation over oxidative-annulation: Pd-catalyzed α,β-dehydrogenation of α-cinnamyl β-keto nitriles
Nallagonda, Rajender,Reddy, Reddy Rajasekhar,Ghorai, Prasanta
supporting information, p. 7317 - 7320 (2017/09/25)
A palladium-catalyzed oxidation reaction is disclosed where the nitrile functionality on the substrate simply changes the course of the reaction. Our previous finding showed that using the Pd(ii)-catalyst in the presence of benzoquinone as an oxidant, 2-cinnamyl-1,3-dicarbonyls provides functionalized furans via oxidative cyclization. When a nitrile group is replaced with one of the carbonyl functionalities of the same substrate, the oxidative cyclization was completely suppressed; instead, the oxidation at the α,β-position occurred to provide α,β,γ,δ-diene containing β-keto nitriles.
Phosphine-catalyzed domino reaction: A novel sequential [2+3] and [3+2] annulation reaction of γ-substituent allenoates to construct bicyclic[3, 3, 0]octene derivatives
Li, Erqing,Huang, You
, p. 948 - 950 (2014/01/06)
We have successfully developed a novel and efficient phosphine-catalyzed sequential [2+3] and [3+2] annulation reaction of γ-substituent allenoates to construct bicyclic[3, 3, 0]octene derivatives. The protocol uses readily available γ-substituent allenoa
Studies of Polyfunctionally Substituted Heteroaromatics: Synthesis of New Polyfunctionally Substituted Azabiaryls
Al-Omran, F.,Al-Awadi, N.
, p. 2201 - 2220 (2007/10/03)
The styryl derivatives 1a-e reacted with malononitrile by refluxing in ethanolic sodium ethoxide solution to yield the polyfunctionally substituted pyridine derivatives 4a-e rather than 7a-e, respectively.Compounds 4a-k were also obtained via condensation
STEREOSELECTIVE s + ?2s>-DIPOLAR CYCLOADDITION OF PYRIDINIUM YLIDES TO NITRILES OF THE trans-1,3-BUTADIENE SERIES. CRYSTAL AND MOLECULAR STRUCTURE OF 3-BENZOYL-1-(2,2-DICYANO-1-CYCLOPROPYLVINYL)-2-PHENYL-6-CYANO-1,2-trans-2,3-trans-1,9-trans-1,2,3,9-TETRAHYDROINDOLIZINE
Shestopalov, A. M.,Sharanin, Yu. A.,Nesterov, V. N.,Khoroshilov, G. E.,Shklover, V. E.,et al.
, p. 1084 - 1090 (2007/10/02)
The interaction of substituted trans-1,1-dicyano-4-phenyl-1,3-butadienes with pyridinium ylides proceeds through the path of s + ?2s>-dipolar cycloaddition, highly regioselective and stereoselective, with formation of substituted 1-(2,2-dicyanovinyl)-2-phenyl-6-cyano-1,2-trans-2,3-trans-1,9-trans-1,2,3,9-tetrahydroindolizines.The stereoselectivity of these reactions is due to endo-addition of molecules of trans-1,3-butadienes to the anti form of pyridinium ylides; it is confirmed by correlation analysis of the data from double PMR, mathematical calculations of torsion angles, and X-ray structural studies of the substituted tetrahydroindolizines.
