Diels–Alder reaction of 2,7‐dichloroquinoline‐5,8‐dione with a thiazole o ‐quinodimethane. Assignment of the regiochemistry by 1 H– 13 C HMBC correlations
2001; Wiley; Volume: 40; Issue: 2 Linguagem: Inglês
10.1002/mrc.971
ISSN1097-458X
AutoresRicardo A. Tapia, Yolanda Prieto, Félix Pautet, Bernard Fenêt, Houda Fillion,
Tópico(s)Synthesis of Organic Compounds
ResumoAbstract The Diels–Alder reaction between a thiazole o ‐quinodimethane and 4,6‐dichloroquinoline‐5,8‐dione gave 6‐chloro‐9‐azaanthra[2,3‐ b ]thiazole‐5,10‐dione as a single regioisomer. Its structure was assigned by 2D 1 H– 13 C HMBC short‐ and long‐range correlations. Measuring the spectra in CF 3 CO 2 D indicated that both nitrogen atoms of pyridine and thiazole rings are deuterated. Copyright © 2001 John Wiley & Sons, Ltd.
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