The mass spectra of four cycloalkane/ene cis-and trans-condensed 2-thioxo-2,3,5,6-tetrahydropyrimidin-4(1H)ones and the corresponding cycloalkane/ene cis-and trans-condensed I 1,3 1 thiazino I3,2-a I pyrimidinones were measured. Fragmentation pathways were confirmed by metastable ion analyses and ex
Preparation and structure of cycloalkane-condensed [1,3]thiazino[3,2-a] pyrimidinones
✍ Scribed by Pál Sohár; Zsolt Szöke-Molnár; Géza Stájer; Gábor Bernáth
- Publisher
- John Wiley and Sons
- Year
- 1989
- Tongue
- English
- Weight
- 396 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0749-1581
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## Abstract The C=N double bond of certain __cis__‐ or __trans__‐cycloalkane and __diexo__‐ or __diendo__‐norbornane‐condensed pyridazinones was reduced with NaBH~3~CN. The __cis__‐ or __trans__ nature of the starting cycloalkane derivatives was always retained in the saturated products, with a hig