Organic Magnetic Resonance p. 7 - 12 (1981)
Update date:2022-07-31
Topics:
Nakanishi, Hiroshi
Roberts, John D.
The 15N NMR chemical shifts were measured of a number of N-substituted formamides and acetamides at the natural abundance level.The ratios of the cis and trans isomers for several N-alkylformamides were also determined.Substituent effects on the 15N chemical shifts of formamides are compared with those of some other nitrogen-containing compounds.There is a consistent pattern of behavior of the one bond spin-spin coupling constants <1J(15NH)> wherein the trans isomers of N-alkylformamides are larger than those of the cis isomers.
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