Towards chiral 1,2-naphthalocyanines: 2. Synthesis of lutetium bismacrocyclic derivatives

Starting from 1,2-naphthalocyanine lutetium acetate (1,2-NcLuOAc) the unsym metrical lutetium phthalo(naphthalo)cyanine (1,2-NcLuPc) has been synthesiz ed and characterized by optical absorption spectra and fast atom bombardmen t (FAB) mass spectrometry. 1,2-Naphthalocyanine shows several geometrical i somers, both the mixture (noted Nc(Sigma)) and one of them (NCCs) have been used for forming the corresponding bismacrocycles. As a result the first r acemic mixture of a chiral unsubstituted phthalo(naphthalo)cyanine complex has been synthesized and characterized. Copyright (C) 2001 John Wiley & Son s, Ltd.