Thermally stable fatigue resistant near infrared active photochromic compounds, exemplified by 6-amino-7-cyano-3-(dicyclopropylmethylene)-4-(2,5-dimethyl-3-furyl)-benzofuran-2(3H)-one

Authors
Heller, HG Hughes, DS Hursthouse, MB Rowles, NG
Citation
Hg. Heller et al., Thermally stable fatigue resistant near infrared active photochromic compounds, exemplified by 6-amino-7-cyano-3-(dicyclopropylmethylene)-4-(2,5-dimethyl-3-furyl)-benzofuran-2(3H)-one, CHEM COMMUN, (15), 2000, pp. 1397-1398
Citations number
3
Categorie Soggetti
Chemistry
Journal title
CHEMICAL COMMUNICATIONS
ISSN journal
13597345 → ACNP
Issue
15
Year of publication
2000
Pages
1397 - 1398
Database
ISI
SICI code
1359-7345(2000):15<1397:TSFRNI>2.0.ZU;2-6
Abstract
The title pale yellow photochromic compound 11b in toluene, on irradiation at 366 nm, cyclises to the thermally stable infrared active blue-green phot ochrome, 8-amino-7-cyano-4,4-dicyclopropyl-3a,4-dihydro-6-hydroxy-2,3a-dime thylnaphtho[2,1-b]furan-5,6-carbolactone, 12b which has a lambda(max) value of 720 nm for its broad long wavelength absorption band.