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Mannich reactions. Synthesis of 4,5-dihydropyrrolo[l,2-a]quinoxalines, 2,3,4,5-tetrahydro-lH-pyrrolo[l,2-a] [l,4]diazepines and 5,6-dihydro-4H-pyrrolo[ 1,2-a] [ 1,4]benzodiazepines

✍ Scribed by Stephen Raines; Sie Yearl Chai; Frank P. Palopoli

Book ID
112123799
Publisher
Journal of Heterocyclic Chemistry
Year
1976
Tongue
English
Weight
329 KB
Volume
13
Category
Article
ISSN
0022-152X

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## Abstract The synthetic pathway leading to 5,6‐dihydro‐4__H__‐furo[3,2‐__f__]pyrrolo[1,2‐__a__][1,4]diazepines is described in four steps starting from α‐bromophenones __via__ 2‐amino‐3‐furonitriles.

Syntheses of 7-phenyl-5h-thiazolo[5,4-e]
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## Abstract Fused tricyclic 7‐phenyl‐5__H__‐thizolo[5,4‐__e__]pyrrolo[1,2‐__a__][1,4]diazepin‐10(9__H__)one (**10**) was prepared by thermolysis of 2‐phenyl‐4‐(1‐pyrrolylmethyl)thiazole‐5‐carbonyl azide (**9**) in acetic acid. In addition, starting from **10**, 7‐phenyl‐5__H__‐thiazolo [5,4‐__e__][