A study of the 15N NMR chemical shifts in substituted anilines and phenylhydrazines, and their derivatives.
The analysis of (15)N chemical shift data from over a hundred anilines, N-methyl anilines, N,N-dimethyl anilines and phenylhydrazines with substituents in the phenyl ring leads to an empirical equation, delta(cal) = deltaon + Deltao + Deltam + Deltap, for calculating (15)N NMR chemical shifts of the amino group. This equation is based on a linear regression analysis using eighteen substituent parameters and leads to good conformity with the expected data.
Zhejiang Provincial Key Laboratory of Leather, Wenzhou University, Wenzhou, 325027, China. llsggg@yahoo.com
Linsheng
L
Li
Lina
L
Zhang
Yunjun
Y
Lan
Changhui
C
Zhang