Journal
GREEN CHEMISTRY
Volume 13, Issue 11, Pages 3075-3078Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1gc15875a
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Funding
- CNRS
- French Ministry for Research
- Institut Universitaire de France
- ANR [09-Blanc-0101-01]
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Ru(OAc)(2)(p-cymene) catalyses the directed dehydrogenative alkenylation of N-aryl pyrazoles by styrene and alkyl acrylates in the presence of a catalytic or stoichiometric amount of Cu(OAc)(2)center dot H2O in air; the acetic acid solvent plays a key role. With arene electron-donating groups, ruthenium-catalysed ortho-dialkenylation with alkyl acrylates can be obtained. A new method to generate the oxidative homocoupling of N-phenylpyrazole is provided with the Ru(OAc)(2)(p-cymene) catalyst.
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