Journal
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
Volume 2005, Issue 23, Pages 5055-5066Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.200500551
Keywords
sulfur nitrogen heterocycles; materials science; liquid crystals; radicals; fused-ring systems
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3-Amino-1H-indene-2-carbonitrile and 2-amino-3H-indene-1-carbonitrile reacted with SCl2, iBu(3)N and NCS to give benzocyclopenta[1,2,6]thiadiazines, and whilst 2-aminocyclopent-1-enecarbonitrile gave, under the same conditions, a cyclopenta[1,2,6]thiadiazine, its reaction with mixtures of S2Cl2, SCl2 and iBu(3)N under different conditions gave, selectively, an isothiazolo[3,4-d]cyclopenta[1,2,3]dithiazole and new cyclopenta[1,2,3]dithiazole derivatives. Similarly, 2-aminocyclohept-1-enecarbonitrile reacted with SCl2, iBu(3)N and NCS to give a formally antiaromatic cyclohepta[1,2,3]dithiazole. Some of the compounds obtained showed characteristics useful as new Materials, for example, as liquid crystals and near-infrared dyes. (c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005.
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