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UV spectroscopic study of the acid-base reactions of 3-hydroxypyridines and 5-hydroxypyrimidines

✍ Scribed by I. K. Korobeinicheva; V. F. Sedova; S. B. Gashev; L. D. Smirnov; O. V. Yagodina; V. P. Mamaev

Publisher
Springer US
Year
1989
Tongue
English
Weight
534 KB
Volume
25
Category
Article
ISSN
0009-3122

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✦ Synopsis

B. A solution of nitrosopyrimidine VIIa-c in 300 ml chloroform prepared as described above was also sparged with ozone (flow rate 2-3 mmole/h) until the nitrosopyrimidine had disappeared (based on TLC analysis with chloroform eluent). The reaction mixture was worked up as described above in Part A, to give compounds XIa-c.

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## Abstract Carbon and proton NMR spectra of 3‐hydroxypyridine and its O‐methyl and N‐methyl derivatives have been analysed, and are compared with the spectra of the corresponding 2‐ and 4‐substituted pyridines. It is shown, that contrary to quantum chemical predictions and in agreement with chemic