ChemInform Abstract: Abnormal and Direct para‐Trifluoroacetylation of Branched Alkyl Phenyl Ketones by Magnesium‐Promoted Reductive Aromatic Substitution.

Maekawa, Hirofumi; Ozaki, Taro; Zulkeflee, Dayana; Murakami, Taro; Kihara, Shin; Nishiguchi, Ikuzo

doi:10.1002/chin.201223077

ChemInform

2012

DOI: 10.1002/chin.201223077

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ChemInform Abstract: Abnormal and Direct para‐Trifluoroacetylation of Branched Alkyl Phenyl Ketones by Magnesium‐Promoted Reductive Aromatic Substitution.

Hirofumi Maekawa

Taro Ozaki

Dayana Zulkeflee

et al.

Abstract: A simple two‐step sequence allows the conversion of phenyl ketones into p‐trifluoroacetyl derivatives via cross‐coupling with ester (II) followed by desilylation of the mixed acetals.

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19-Fluorine nuclear magnetic resonance chemical shift variability in trifluoroacetyl species

Sloop¹

2013

ROC

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This review examines the variability of chemical shifts observed in 19-fluorine ( 19 F) nuclear magnetic resonance spectra for the trifluoroacetyl (TFA) functional group. The range of 19 F chemical shifts reported spectra for the TFA group varies generally from −85 to −67 ppm relative to CFCl 3 . The literature revealed several factors that impact chemical shifts of the TFA moiety − substrate topology, electronic environment, solvent polarity, and concentration effects. Often these effects conspire to cause deshielding of the TFA group by up to 15 ppm. These factors will be examined for a series of TFA-functionalized acyclic, cyclic, aromatic, and heterocyclic molecules.

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19-Fluorine nuclear magnetic resonance chemical shift variability in trifluoroacetyl species

Sloop¹

2013

ROC

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ChemInform Abstract: Abnormal and Direct para‐Trifluoroacetylation of Branched Alkyl Phenyl Ketones by Magnesium‐Promoted Reductive Aromatic Substitution.

Abstract: A simple two‐step sequence allows the conversion of phenyl ketones into p‐trifluoroacetyl derivatives via cross‐coupling with ester (II) followed by desilylation of the mixed acetals.

Cited by 1 publication

References 1 publication

19-Fluorine nuclear magnetic resonance chemical shift variability in trifluoroacetyl species

19-Fluorine nuclear magnetic resonance chemical shift variability in trifluoroacetyl species

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