THE EFFICIENT SYNTHESIS OF NEW SYDNONES CONTAINING FUSED RING
โ Scribed by Zhang, Zhan Bin; Wu, Yong Ren; Yin, Cheng Lie
- Book ID
- 120173936
- Publisher
- Taylor and Francis Group
- Year
- 2002
- Tongue
- English
- Weight
- 94 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0039-7911
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๐ SIMILAR VOLUMES
## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
## Abstract A series of new chiral (__S__)โ3โary1โ6โpyrrolidinโ2โylโ[1,2,4]triazolo[3,4โ__b__]thiadiazole (II~1โ5~), (__S__)โ1โ(3โarylโ[1,2,4]triazolo[3,4โ__b__][1,3,4]thiadiazolโ6โyl)โethylamine (II~6โ8~) and (__S__)โ1,2โbis(3โarylโ[1,2,4]triazoloโ[3,4โ__b__][1,3,4]thiadiazolโ6โyl)โethylamine (II~
Pyrazinoindoloquinone 6 was synthesized by alkylation of ethyl 4,7-dimethoxyindole-2-carboxylate (1), followed by cyclization of the N-bromoethyl derivative 2b in the presence of ammonia. Oxidative demethylation of 2b and of the oxopyrazinoindole 3 with silver(II) oxide furnished quinones 5b and 6.