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6 results on '"X, Duan"'

3. ChemInform Abstract: A Simple, Novel Method for the Preparation of Trifluoromethyl Iodide and Diiododifluoromethane

Author

De-Bao Su, Qing-Yun Chen, and J.‐X. Duan

Subjects
chemistry.chemical_classification, chemistry.chemical_compound, Trifluoromethyl, Chemistry, Iodide, chemistry.chemical_element, General Medicine, Iodine, Potassium fluoride, Nuclear chemistry, Copper iodide
Abstract

CF3l was synthesized in high yields by treatment of XCF2CO2Me(X = Cl or Br) with iodine in the presence of potassium fluoride and copper iodide; if Kl was used instead of KF under similar conditions, CF2l2 was obtained in moderate yields.

Published
2010
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4. ChemInform Abstract: Synthesis of Trifluoromethyl Aryl Derivatives via Difluorocarbene Precursors and Nitro-Substituted Aryl Chlorides

Author

De-Bao Su, J.‐X. Duan, Jian-Ping Wu, and Qing-Yun Chen

Subjects
chemistry.chemical_compound, Trifluoromethyl, chemistry, Difluorocarbene, Aryl, Nitro, General Medicine, Medicinal chemistry, Potassium fluoride, Copper iodide
Abstract

Treatment of aryl chlorides containing electron-withdrawing groups with methyl fluorosulfonyl difluoroacetate or methyl halodifluoroacetate in the presence of potassium fluoride and copper iodide gave the corresponding trifluoromethyl derivatives in moderate to high yields.

Published
2010
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5. ChemInform Abstract: Trifluoromethylation of Organic Halides with Methyl Halodifluoroacetates. A Process via Difluorocarbene and Trifluoromethide Intermediates

Author

De-Bao Su, J.‐X. Duan, and Qing-Yun Chen

Subjects
Substitution reaction, chemistry.chemical_compound, Difluorocarbene, Chemistry, Trifluoromethylation, Scientific method, Halide, General Medicine, Medicinal chemistry
Abstract

Treatment of methyl halodifluoroacetates, XCF2CO2Me (X = Cl, Br, I), with organic halidesRY in the presence of KF and CuI at an appropriate temperature in DMF gave thecorresponding trifluoromethylated derivatives, RCF3, in moderate to high yields. A processinvolving difluorocarbene and trifluoromethide intermediates is suggested.

Published
2010
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