1,721,050 research outputs found
Palladium-Catalyzed Conjugate Addition Type Reaction of Aryl Iodides with alpha,beta-Unsaturated Ketones
No full textAryl iodides have been found to react with alpha,beta-unsaturated ketones in the presence of catalytic amounts of
palladium, an excess of formic acid, and triethylamine, giving rise to conjugate addition type products. The
electron-withdrawing power of the group attached to the olefinic double bond, the beta substituent to the carbonyl
group, and the basic reaction medium appear to affect greatly the conjugate addition/vinylic substitution ratio
Oxypalladation-Reductive Elimination Domino Reactions with Organopalladium and Hydropalladium Derivatives
No full textThe conversion of vinyl triflates into γ'-hydroxy-α,β-enones
No full textVinyl triflates have been converted into γ'-hydroxy-α,β-enones through their palladium-catalysed coupling with 1-butyn-4-ols followed by the reaction of the obtained 1-hydroxy-3-yn-5-enes in an acidic CH2Cl2/3 N HCl two-phase system in the presence of the n-BuN4Cl/PdCl2 combination. Both the coupling step and the conversion of the carbon-carbon triple bond into the ketonic group have been performed at room temperature. The conversion of vinyl triflates into γ'-hydroxy-α,β-enones can be carried out through a one-flask process, without the isolation of 1-hydroxy-3-yn-5-enes
A VERSATILE APPROACH TO 2,3-DISUBSTITUTED INDOLES THROUGH THE PALLADIUM-CATALYZED CYCLIZATION OF ORTHO-ALKYNYLTRIFLUOROACETANILIDES WITH VINYL TRIFLATES AND ARYL HALIDES
No full textThe Palladium-catalyzed cyclization of o-alkynyltrifluoroacetanilides with vinyl triflates and aryl halides produces 2,3-disubstituted indoles in good to high yiel
PALLADIUM-CATALYZED REDUCTIVE ADDITION OF ARYL IODIDES TO ARYL AND ALKYLETHYNYLSILANES - A STEREO AND REGIOSELECTIVE ROUTE TO FUNCTIONALIZED 2,2-DISUBSTITUTED VINYLSILANES
No full textPALLADIUM-CATALYZED COUPLING OF ARYL AND VINYL TRIFLATES OR HALIDES WITH 2-ETHYNYLANILINE - AN EFFICIENT ROUTE TO FUNCTIONALIZED 2-SUBSTITUTED INDOLES
No full textThe Pd-catalysed coupling of the easily available 2-ethynylaniline with aryl and vinyl triflates or halides followed by a Pd(II) catalysed cyclization provides 2-substituted indoles in good yield
PALLADIUM-CATALYZED REACTION OF 2-HYDROXYARYL AND HYDROXYHETEROARYL HALIDES WITH 1-ALKYNES - AN IMPROVED ROUTE TO THE BENZO[B]FURAN RING-SYSTEM
No full textTHE PALLADIUM-CATALYZED REDUCTIVE ADDITION OF ARYL IODIDES TO PROPARGYL ALCOHOLS - A ROUTE TO GAMMA,GAMMA-DIARYL ALLYLIC ALCOHOLS
No full textA Novel One-Pot Palladium-Catalysed Synthesis of 2-Aryl- and 2-Vinyl-4H-3,1-benzoxazin-4-ones
No full textThe palladium-catalysed reaction of o-iodoaniline with unsaturated halides or triflates in the presence of K2CO3 and catalytic amounts of Pd(PPh3)4 under an atmosphere of carbon monoxide affords 2-aryl- and 2-vinyl-4H-3,1-benzoxazin-4-ones in good to high yield
The palladuim-catalyzed addition to carbon-carbon multiple bonds as a tool for the synthesis of heterocyclic derivatives
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