Synthesis and reactivity of pyrrolo[1,2-α]quinoxalines. Crystal structure and AM1 calculation

Autor:	H. Viols, G. Dauphin, Olivier Chavignon, A. Elhakmaoui, A. Carpy, Jean-Claude Teulade, Yves Blache, Jean-Pierre Chapat, Gérard Grassy, A. Gueiffier
Rok vydání:	1995
Předmět:	Crystallography MOPAC Chemistry Yield (chemistry) Organic Chemistry Condensation Surface modification Reactivity (chemistry) Crystal structure Monoclinic crystal system
Zdroj:	Journal of Heterocyclic Chemistry. 32:1317-1324
ISSN:	1943-5193 0022-152X
Popis:	2-Methylquinoxaline reacts with ethyl bromopyruvate giving 2-substituted pyrrolo[1,2-α]quinoxalines. The yield of the condensation depends on the functionalization of starting materials, and optimization is obtained with 2-dimethylamino-3-methylquinoxaline (1c). Reactivity of the resulting pyrrolo[1,2-a]-quinoxalines was investigated and supported by a theoretical approach (AM1 calculation performed with the MOPAC 6.0 software). X-ray analysis of 5 which crystallizes in the monoclinic system, space group P21/n, with a = 9.095(1), b = 8.972(1), c = 17.749(3) A, β = 96.56(1)°, is also reported.
Databáze:	OpenAIRE
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