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An Efficient and Convenient Synthesis of 2-Thio[1,2,4]triazolo[1,5-c]quinazoline and its Derivatives

✍ Scribed by Alexandr V. Karpenko; Sergey I. Kovalenko; Svetlana V. Shishkina; Oleg V. Shishkin


Book ID
106213762
Publisher
Springer Vienna
Year
2006
Tongue
English
Weight
109 KB
Volume
137
Category
Article
ISSN
0026-9247

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Synthesis and reactivity of 1,2,4-triazo
✍ Wolf-Diethard Pfeiffer; Anja Bodtke; Jana MΓΌcke; Annemarie Hetzheim; Pavel Pazde πŸ“‚ Article πŸ“… 1999 πŸ› Journal of Heterocyclic Chemistry 🌐 English βš– 706 KB

## Abstract The preparation of 1,2,4‐triazolo[1,5‐__c__]quinazolines 4a‐d, 5, 8a‐d by cyclocondensation of 1a‐c with carboxylic acids and carboxylic anhydrides, respectively, is described. By different pathways, the 5‐thioxo‐5,6‐dihydro‐1,2,4‐triazolo[1,5‐__c__]quinazolines 4a‐d react with hydrazin