A new synthesis of pyrimido[5,4-e]-as-triazine 4-oxides and their ring transformation to pyrrolo[3,2-d]pyrimidines
✍ Scribed by Sadao Nishigaki; Hashime Kanazawa; Yukako Kanamori; Misuzu Ichiba; Keitaro Senga
- Book ID
- 112126905
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 1982
- Tongue
- English
- Weight
- 214 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0022-152X
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📜 SIMILAR VOLUMES
## Abstract magnified image An efficient one‐pot access for the synthesis of the previously unreported tetracyclic fused pyrimido‐[4″,5″:4′,5′]thieno[3′,2′:4,5]thieno[3,2‐__d__]pyrimidine (**3**) and 1,2,3‐triazine[4″,5″:4′,5′]thieno‐[3′,2′:4,5]thieno‐[3,2‐__d__]‐1,2,3‐triazine (**5**) heteroaroma
## Abstract Some new 7,9‐disubstituted 7__H__‐1,2,3,4‐tetrazolo[1,5‐__c__]pyrrolo[3,2‐__e__]pyrimidines 5 have been synthesized either by diazotization of 4‐hydrazino‐5,7‐disubstituted‐7__H__‐pyrrolo[2,3‐__d__]pyrimidines 4 obtained by hydrazinolysis of 4‐chloro‐5,7‐disubstituted‐7__H__‐pyrrolo[2,3