𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Cyclocondensation reactions of heterocyclic carbonyl compounds XII. The double course of cyclization of 3-(2-aminobenzyl)-1,2-dihydro-quinoxaline-2-one

✍ Scribed by Iveta Fryšová; Jan Slouka; Jan Hlaváč; Antonńan Lyčka

Publisher
Journal of Heterocyclic Chemistry
Year
2006
Tongue
English
Weight
243 KB
Volume
43
Category
Article
ISSN
0022-152X

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

magnified image

The cyclocondensation reaction of compound 1 in boiling hydrochloric acid had an unexpected course. Instead of supposed 5,11‐dihydro‐quinoxalino[2,3‐b]quinoline 6a, 2‐(indol‐2‐yl)‐benzimidazole 4 was isolated as the major product.

📜 SIMILAR VOLUMES

Cyclocondensation reaction of heterocycl
Cyclocondensation reaction of heterocyclic carbonyl compounds . The direction of competitive cyclocondensation between carbonyl groups of 6-azauracile and 1,2-dihydro-quinoxalin-2-one cycles
✍ Roman Buchtík; Jan Hlaváč; Jan Slouka; Petr Fryčák 📂 Article 📅 2004 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 117 KB 👁 1 views

## Abstract In the article the study of cyclocondensation of 3‐[2‐amino‐3‐(3,5‐dioxo‐2,3,4,5‐tetrahydro[1,2,4]‐triazme‐6‐yl)phenyl]‐2,3‐dihydro‐quinoxalin‐2‐one **5** is described and it was found, that the reaction does not proceed by both possible directions, but only cyclization with the carbony

Synthesis and Reactions of 3-Phenyl-3,4-
Synthesis and Reactions of 3-Phenyl-3,4-Dihydro-1, 4-Quinoxalin-2 (1H) -One and its Heterocyclic Analogues
✍ T. O. Olagbemiro; C. A. Nyakutse; L. Lajide; M. O. Agho; C. E. Chukwu 📂 Article 📅 2010 🏛 Wiley (John Wiley & Sons) ⚖ 333 KB 👁 1 views

were synthesized by reactions o? methyl 2-bromo-2-phmylethanorrte 1 with oFthosubstituted arylaminea 2a -2c. Subsequent reductive alkylationofthe lactams with aodium hydride and-iodobthane afforded only the N-alkylated quinoxalinone 4a and benzothiazinone 4b. Lithium aluminium hydride reduction of t