Halogenation O 0235Electrochemical Partial Fluorination of Ethyl Cinnamates and Cinnamonitrile.-The selective electrochemical fluorination of ethyl cinnamates and cinnamonitrile under controlled anode potentials using ammonium fluorides as supporting electrolytes and fluorine sources yields 2,3-difluoro-3-arylpropionates and 2,3-difluoro-3-arylpropionitrile, resp., as a mixture of two diastereomers. -(DINOIU*, V.; KANNO, K.; FUKUHARA, T.; YONEDA, N.; Rev. Roum. Chim. 49 (2004) 12, 981-987; Nenitzescu Inst. Org. Chem., Roum. Acad., RO-77208 Bucharest, Rom.; Eng.) -C. Hettrich
Halogenation O 0235Electrochemical Partial Fluorination of α,β-Unsaturated Ketones. -Anodic fluorination of α,β-unsaturated ketones (I) using ammonium fluorides as supporting electrolytes and fluorine sources at room temperature yields the expected vicinal difluoroketones as mixtures of two diastereomers. However, anodic fluorination of hindered phenol-containing chalcone (IV) yields only the two monofluorinated compounds (V) and (VI). -(DINOIU*, V.; KANNO, K.; Rev. Roum. Chim. 49 (2004) 12, 989-993; Nenitzescu Inst. Org. Chem., Roum. Acad., RO-77208 Bucharest, Rom.; Eng.) -C. Hettrich
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