Palladium-catalyzed amination of photochromic triflate-substituted 3H-naphtho[2,1-b]pyrans

Authors
Demadrille, R Moustrou, C Samat, A Guglielmetti, R
Citation
R. Demadrille et al., Palladium-catalyzed amination of photochromic triflate-substituted 3H-naphtho[2,1-b]pyrans, HETEROCYC C, 5(2), 1999, pp. 123-126
Citations number
32
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
HETEROCYCLIC COMMUNICATIONS
ISSN journal
07930283 → ACNP
Volume
5
Issue
2
Year of publication
1999
Pages
123 - 126
Database
ISI
SICI code
0793-0283(1999)5:2<123:PAOPT3>2.0.ZU;2-9
Abstract
The conversion of triflic 3H-naphtho[2,1-b]pyrans to the corresponding pipe razine derivatives, using the combination of palladium acetate/BINAP as cat alyst is reported. Compared to the 3,3-diphenyl-3H-naphtho[2,1-b]pyran, the amino group on the 8-position of naphthopyran part induces a significant b athochromic shift of the absorption of the coloured form.