Convenient Syntheses of 1,2,3,4-Tetrahydroquinoxalines
✍ Scribed by SMITH, RICHARD F.; REBEL, WILLIAM J.; BEACH, THAISA N.
- Book ID
- 118070301
- Publisher
- American Chemical Society
- Year
- 1959
- Tongue
- English
- Weight
- 388 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0022-3263
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## Abstract (Z)‐3‐(α‐Alkoxycarbonyl‐α‐cyanomethylene)‐2‐oxo‐1,2,3,4‐tetrahydroquinoxalines 3 and (Z)‐3‐(α‐alkoxycarbonyl‐α‐cyanomethylene)‐3,4‐dihydrobenzo[__g__]quinoxalin‐2(1__H__)‐ones 5 possessing various alkoxycarbonyl groups were prepared in good yields directly from the reaction of dialkyl (
Dihydropyrrolo[2%,1%:3,4]pyrazino[2,1-a]isoindolones 10a-10c were obtained in 76-81% yields by the reaction of 2-(1H-pyrrol-1-yl)ethylamine 8 with 2-formylbenzoic acids 9a, 9b or 2-acetylbenzoic acid 9c via N-acyliminium cation aromatic cyclizations. Similarly, dihydropyrrolo[2%,1%:3,4][1,4]diazepin