A Method for Construction of New Condensed System - Quinoxalino[1,2-a]pyrrolo[2,3-b][1,5]pyridodiazepin
✍ Scribed by I. V. Mashevskaya; S. V. Kol'tsova; A. V. Duvalov; A. N. Maslivets
- Book ID
- 111527210
- Publisher
- Springer US
- Year
- 2000
- Tongue
- English
- Weight
- 61 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0009-3122
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📜 SIMILAR VOLUMES
## Abstract A nucleophilic substitution reaction in the pyrrole series, achieved by a neutral nucleophile, led to the key intermediate 7 which by reduction and successive diazotization afforded the new ring system pyrrolo[3,2‐__c__][1,2,5]benzotriazocine 9 in good yield.
## Abstract Previously synthesized 2‐(3′‐chloro‐5′,6′‐dicyanopyrazin‐2′‐yl)cyclopentan‐1‐one **1**, obtained from the reaction of 2,3‐dichloro‐5,6‐dicyanopyrazine with 1‐pyrrolidino‐1‐cyclopentene, was further reacted with primary alkylamines to give mixtures of diastereomer of 5‐alkyl‐2,3‐dicyano‐