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Methylation and proton magnetic resonance spectra of some pyrazolo[3,4-d- and 4,3-d]pyrimidinediones

✍ Scribed by C. S. Mahajanshetti; Ludwig Bauer


Book ID
112123424
Publisher
Journal of Heterocyclic Chemistry
Year
1975
Tongue
English
Weight
179 KB
Volume
12
Category
Article
ISSN
0022-152X

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## Abstract Accurate parameters for the two title compounds have been obtained by the aid of a spectral subtraction technique in conjunction with analysis by LAOCN3. It is observed that __J__~1eq, 6eq~ and __J__~1ax, 2ax~ are abnormally large and small, respectively, and the significance of these a