143798-69-0Relevant academic research and scientific papers
Solvent and substituent effects on the conversion of 4-methoxypyridines to N-methyl-4-pyridones
Yi, Xiao,Chen, Jing,Xu, Xiuling,Ma, Yongmin
supporting information, p. 872 - 877 (2017/04/27)
In the reaction of 4-methoxypyridine derivatives with alkyl iodides in the presence or absence of solvent, not only the pyridinium ions but also the related 1-methylpyridones are produced. The presence of solvent favors the formation of the 1-methylpyridone. Electron withdrawing groups on the pyridine ring also favor this conversion. A possible mechanism is presented.
NMR Studies of Bond Orders in Heteroaromatic Systems
Hatton, Paul M.,Sternhell, Sever
, p. 935 - 946 (2007/10/02)
Fifty-seven for the ortho-benzylic coupling constant 4JMe-C=C-H (henceforth denoted as 4JOB) were obtained for a variety of heteroaromatic systems.It was shown that a good correlation exists between 4JOB when the methyl group is not α to the heteroatom and the SCF-MO bond order.This method can therefore be used as experimental means of determining bond orders in heteroaromatic systems.An examination of bond alternation in thirteen heteroaromatic systems has given a measure of relative "degree of aromaticity" for a larger number of systems than previously r eported by any single method.
