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Phototransformation of 1,2,4-triazolo[1,2-a]pyridazine-1,3-dione to pyrrolo[1,2-a]-1,3,5-triazine-2,4-dione

✍ Scribed by Sheradsky, Tuvia; Moshenberg, Reuven

Book ID
118163733
Publisher
American Chemical Society
Year
1984
Tongue
English
Weight
720 KB
Volume
49
Category
Article
ISSN
0022-3263

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## Abstract The mass spectra of eight pyrrolo[1,2‐__a__][1,3,5]triazie‐2,4(1__H__, 3__H__)‐diones have been examined. An unusual feature in the fragmentation of those compounds having a 7‐alkoxycarbonyl function, namely loss of the whole ester grouping with concomitant hydrogen rearrangement, is di

1,2,3-Triazolo[4,5-d]-1,2,4-triazolo[4,3
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## Abstract Some new 1,2,3‐triazolo[4,5‐__d__]‐1,2,4‐triazolo[4,3‐b]pyridazines were prepared starting from the corresponding 1,2,3‐triazolo[4,5‐__d__]pyridazines __via__ the formation of the 1,2,4‐triazole ring, by condensation of an appropriate monocarbon fragment with the 4‐hydrazino substituent