1 H, 13 C and 15 N NMR spectral and theoretical studies of some methyl and alkylamino derivatives of 4-halopyridine N-oxides

…, A Puszko, J Linnanto, E Kolehmainen

文献索引：Laihia; Puszko; Linnanto; Kolehmainen Journal of Molecular Structure, 2006 , vol. 783, # 1-3 p. 73 - 78

全文：HTML全文

被引用次数: 15

摘要

Nine new and three earlier known 4-halogen (Cl and Br) substituted pyridine N-oxides have been prepared and their 1H, 13C and 15N NMR chemical shifts assigned based on PFG 1H, X (X= 13C and 15N) HMQC and HMBC experiments as well as the comparison with our earlier results for substituted pyridine N-oxide derivatives. The 15N resonances of the pyridine nitrogen are 27–40ppm more shielded in 4-halo-2-alkylamino-6-methyl-5- ...