The Journal of Organic Chemistry

Cis-trans isomerism of thionocarbamate esters

RA Bauman

文献索引：Bauman,R.A. Journal of Organic Chemistry, 1967 , vol. 32, p. 4129 - 4132

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被引用次数: 32

摘要

Hindered rotation due to the partial double-bond character of the nitrogen-carbonyl bond is the cause of a form of cis-trans isomerism of N-alkylamides' and thioamideix2 This can usually be detected in the nmr s-cis' s-trans spectra of such compounds either by observation of both of the possible isomers, or of a single preferred form. The former is the case, for example, with N-alkylformarnide~~ and thioacetanilides, 6 whereas the latter ...