Amino derivatives 3 of the trithiadiazepine ring are moderately stable crystalline solids, readily prepared from 6-bromotrithiadiazepine 1 and ammonia or amines under remarkably mild conditions; unusually for aromatic amines, the amino groups are tetrahedral and are not conjugated with, but are orthogonal to, the 10 π heteroaromatic rings, all of which form infinite overlapping stacks in the crystals.
M. J. Plater, C. W. Rees, A. M. Z. Slawin and D. J. Williams, J. Chem. Soc., Chem. Commun., 1990, 1315 DOI: 10.1039/C39900001315
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