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4-Phenyl-6,7,8,9-tetrahydro-[1]benzothieno[3,2-e][1,2,4]triazolo[4,3-a]pyrimidin-5(4H)-one

✍ Scribed by Velavan, R. ;Sivakumar, K. ;Pathak, U. S. ;Jain, K. S. ;Singh, S. ;Fun, H. K.

Book ID
114512139
Publisher
International Union of Crystallography
Year
1995
Tongue
English
Weight
318 KB
Volume
51
Category
Article
ISSN
0108-2701

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## Abstract Some new 1,2,3‐triazolo[4,5‐__e__]‐1,2,4‐triazolo[3,4‐__c__]pyrimidmes were prepared starting from the corresponding 1,2,3‐triazolo[4,5‐__d__]pyrimidines __via__ the formation of the 1,2,4‐triazole ring. Thus suitable hydrazino derivatives 6 were condensed with triethyl orthoformate, tr