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Annulated 1,2,3-triazoles, I. Synthesis of 8-Azapurin-6-ones and 8-Azapurin-6-imines from Ethyl 5-Acetylamino-1,2,3-triazole-4-carboxylates

✍ Scribed by Nielsen, Flemming E. ;Pedersen, Erik B. ;Begtrup, Mikael

Book ID: 102901368
Publisher: John Wiley and Sons
Year: 1984
Tongue: English
Weight: 638 KB
Volume: 1984
Category: Article
ISSN: 0947-3440
DOI: 10.1002/jlac.198419841109

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✦ Synopsis

Abstract

The new 8‐azapurin‐6‐ones 3 and the corresponding 8‐azapurin‐6‐imines 4 are prepared by cyclocondensation of ethyl 5‐acetylamino‐1__H__‐1,2,3‐triazole‐4‐carboxylates 2 with amine hydrochlorides in the presence of phosphorus pentoxide and N,N‐dimethylcyclohexylamine. A reaction pathway is proposed for the formation of 3 and 4. Various products 3 have been tested for fungicide activity.

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