- Palladium-Catalyzed Cross-Coupling of 1,3,4-Oxadiazoles and Styrenes: An Efficient Method to Synthesize 2-Alkenyl-1,3,4- Oxadiazoles §
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2-Alkenyl-1,3,4-oxadiazole derivatives have been prepared by cross-coupling of 1,3,4-oxadiazoles with styrenes by using palladium(II) trifluoroacetate [Pd(TFA) 2 ] as a catalyst, 1,10-phenanthroline as a ligand, silver trifluoroacetate as an oxidant, and toluene as a solvent. The products were formed in high yields and no byproducts were detected.
- Salvanna,Reddy, P. Raghavendar,Das, Biswanath
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- An Improved Synthesis of 2-Aryl- and 2-Alkenyl-1,3,4-oxadiazoles by Using Copper(II) Oxide Nanoparticles as a Catalyst 1
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2-Aryl- and 2-alkenyl-1,3,4-oxadiazoles were efficiently synthesized in high yields by treatment of 1,3,4-oxadiazoles with aryl or alkenyl halides, respectively, in the presence of copper(II) oxide nanoparticles as a catalyst. The reusability of the catalyst is an important advantage in relation to practical applications of this synthesis.
- Salva Reddy,Raghavendar Reddy,Das, Biswanath
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p. 2831 - 2838
(2015/09/15)
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- Copper-catalyzed direct cross coupling of 1,3,4-oxadiazoles with trans-β-halostyrenes: Synthesis of 2-E-vinyl 1,3,4-oxadiazoles
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The first direct C-H alkenylation of 1,3,4-oxadiazoles with trans-β-halo olefinic system has been carried out using a combination of CuI/DMEDA as a catalyst. A wide range of 2-E-vinyl-substituted oxadiazoles were obtained in high yields (85-93%).
- Das, Biswanath,Reddy, Gandolla Chinna,Balasubramanyam, Penagaluri,Salvanna
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p. 300 - 305
(2012/01/05)
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