... Tetrahedron. ... Granatieri, I-50018 Scandicci, Firenze, Italy; c Dipartimento di Chimica Organica 'A. Mangini', Via S. Donato 15, I-40127 Bologna, Italy. Received 12 June 2003, Revised 17 September 2003, Accepted 9 October 2003 ... This behavior, strongly noticed for mono-substituted phthalocianines, was previously found during a structure activity relationship study on phthalocyanine quaternary ammonium salt derivatives (Roncucci, personal communication). ...