A simple access to indolino-azepines - A new halochromic system for information recording

Authors
Ma, YM Weber, C Hartmann, T Durr, H Kruger, C Kossanyi, J
Citation
Ym. Ma et al., A simple access to indolino-azepines - A new halochromic system for information recording, SYNTHESIS-S, (12), 2001, pp. 1812-1817
Citations number
24
Categorie Soggetti
Chemistry & Analysis","Organic Chemistry/Polymer Science
Journal title
SYNTHESIS-STUTTGART
ISSN journal
00397881 → ACNP
Issue
12
Year of publication
2001
Pages
1812 - 1817
Database
ISI
SICI code
0039-7881(200109):12<1812:ASATI->2.0.ZU;2-E
Abstract
A new periselective reaction of an 8 pi -system is reported. This system is prepared by the reaction of spiro[2-cyclopropene-1,9'-fluorene]-2,3-dimeth yldicarboxylates 2 with 2-styryl-3H-indoles 1 to afford azepine derivatives 4. The addition of acids to 4 causes an important color change, thus gener ating a new halochromic system.