PALLADIUM-CATALYZED AMINATION OF PHOTOCHROMIC TRIFLATE- SUBSTITUTED 3H-NAPHTHO[2,1-b]PYRANS

Renaud Demadrille (1) , Corinne Moustrou , Andre Samat , Robert Guglielmetti

1 SYMMES - SYstèmes Moléculaires et nanoMatériaux pour l’Energie et la Santé

The conversion of triflic 3H-naphtho[2,1-fc>]pyrans to the corresponding piperazine derivatives, using the combination of palladium acetate/BINAP as catalyst 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 bathochromic shift of the absorption of the coloured form. Introduction :

Domaines: Chimie; Chimie organique

Renaud Demadrille, Corinne Moustrou, Andre Samat, Robert Guglielmetti. PALLADIUM-CATALYZED AMINATION OF PHOTOCHROMIC TRIFLATE- SUBSTITUTED 3H-NAPHTHO[2,1-b]PYRANS. Heterocyclic communications, 1999, ⟨10.1515/HC.1999.5.2.123⟩. ⟨hal-02265040⟩