The Stereochemistry of the Quaternization of 5-Methyl-5-nitro-1,3-dialkylhexahydropyrimidines
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The proportions of isomers existing in the quaternization products were estimated from the nuclear magnetic resonance (NMR) and thin-layer chromatography data. Based on those data, the stereoselectivity of the quaternization of some 5-methyl-5-nitro-1,3-dialkylhexahydropyrimidines with alkyl iodide was discussed. NMR characteristics and particularly the chemical shifts of axial and equatorial N-methyl and N-ethyl groups were used to assign the configurations.
- 公益社団法人日本薬学会の論文
- 1971-12-25
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