Tetrahedron p. 7467 - 7478 (1992)
Update date:2022-08-04
Topics:
Anastasiou, Despina
Campi, Eva M.
Chaouk, Hassan
Jackson, W. Roy
Rhodium-catalysed reactions of N-alkenyl-1,2-diaminobenzenes (3) with hydrogen and carbon monoxide give benzimidazoles containing a fused alicyclic ring ((8) and (9)) in excellent yields.In some cases intermediate bicyclic compounds can be isolated and the 1H and 13C n.m.r. spectra of one of these, the 3,4,5,6-tetrahydro-4-methyl-3H-1,6-benzodiazocine (6), shows evidence for unusual atropisomerism.
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