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■ Syntheses and Tautomerisations of Amino-substituted and Pyrimidine-annulated Pyrrolobenzodiazepines

Andreas Schmidt,* Abbas Gholipour Shilabin, and Martin Nieger

*Clausthal University of Technology, Institute of Organic Chemistry, Leibnizstrasse 6, D-38678 Clausthal-Zellerfeld, Germany

Abstract

Different tautomers of 11-amino-substituted pyrrolo[2,1-c][1,4]benzodiazepines and 2-substituted 4,7a,12b-triazadibenzo[e,g]azulene-1,8-diones were formed depending on the substitution pattern. Syntheses, spectroscopic investigations and an X-Ray analysis are presented.