Synthesis and photochromic behavior of novel annelated 2H-chromenes derived from hydroxy-9H-xanthen-9-ones

Authors
Coelho, PJ Carvalho, LM Silva, JC Oliveira-Campos, AMF Samat, A Guglielmetti, R
Citation
Pj. Coelho et al., Synthesis and photochromic behavior of novel annelated 2H-chromenes derived from hydroxy-9H-xanthen-9-ones, HELV CHIM A, 84(1), 2001, pp. 117-123
Citations number
22
Categorie Soggetti
Chemistry & Analysis",Chemistry
Journal title
HELVETICA CHIMICA ACTA
ISSN journal
0018019X → ACNP
Volume
84
Issue
1
Year of publication
2001
Pages
117 - 123
Database
ISI
SICI code
0018-019X(2001)84:1<117:SAPBON>2.0.ZU;2-L
Abstract
The synthesis of four novel pyrano-xanthenones derived from hydroxy-9H-xant hen-9-ones is described, and their photochromic properties in solution are reported. All compounds synthesized exhibit a good colorability, making the m good potential dyes. The presence of the chromone system fused in the 7,8 -position seems to lead to more stabilized colored forms.