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- W2391607880 abstract "Stable and optically pure chiral nitronic esters have been synthesized for the first time via asymmetric O-alkylation of the alkali metal nitronate with alkyl halides. Enantiomencally pure chiral O-alkyloximes were also obtained when secondary or certain active primary halides were employed The configuration of the chiral nitronic esters and O-alkyloximes were assigned to be Z on the basis of the nuclear Overhauser effect (NOE) experiments and the analysis of their 13C NMR spectra. A shift rule of chemical shifts of the a-proton(s) of oxygen-containing homologs was discovered. According to the abnormal downfield shift of the H20 signal as well as its peak width at half-height and coupling constants, it was found that the monosubstituted cyclohexane and cyclopentane in the chiral nitronic esters and O-alkyloximes assume axial conformations." @default.
- W2391607880 created "2016-06-24" @default.
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- W2391607880 date "1997-01-01" @default.
- W2391607880 modified "2023-09-25" @default.
- W2391607880 title "Synthesis, property, configuration and conformation of the chiral nitronic esters" @default.
- W2391607880 hasPublicationYear "1997" @default.
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