Patent ID: 7671194
Filing Date: 2010-03-02
Classification: C09B,C09D

Abstract:
1. A method of preparing a naphthalocyanine comprising the steps of: (i) providing a tetrahydronaphthalic anhydride of formula (I): (ii) converting said tetrahydronaphthalic anhydride to a benzisoindolenine of formula (II): (iii) macrocyclizing said benzisoindolenine to form a naphthalocyanine of formula (III): wherein: R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 , R 15 and R 16 are each independently selected from hydrogen, hydroxyl, C 1-20 alkyl, C 1-20 alkoxy, amino, C 1-20 alkylamino, di(C 1-20 alkyl)amino, halogen, cyano, thiol, C 1-20 alkylthio, nitro, C 1-20 alkylcarboxy, C 1-20 alkylcarbonyl, C 1-20 alkoxycarbonyl, C 1-20 alkylcarbonyloxy, C 1-20 alkylcarbonylamino, C 5-20 aryl, C 5-20 arylalkyl, C 5-20 aryloxy, C 5-20 arylalkoxy, C 5-20 heteroaryl, C 5-20 heteroaryloxy, C 5-20 heteroarylalkoxy or C 5-20 heteroarylalkyl; M is absent or selected from Si(A 1 )(A 2 ), Ge(A 1 )(A 2 ), Ga(A 1 ), Mg, Al(A 1 ), TiO, Ti(A 1 )(A 2 ), ZrO, Zr(A 1 )(A 2 ), VO, V(A 1 )(A 2 ), Mn, Mn(A 1 ), Fe, Fe(A 1 ), Co, Ni, Cu, Zn, Sn, Sn(A 1 )(A 2 ), Pb, Pb(A 1 )(A 2 ), Pd and Pt; A 1 and A 2 are axial ligands, which may be the same or different, and are selected from OH, halogen or OR q ; R q is selected from C 1-16 alkyl, C 5-20 aryl, C 5-20 arylalkyl, C 1-20 alkylcarbonyl, C 1-20 alkoxycarbonyl or Si(R x )(R y )(R z ); and R x , R y and R z may be the same or different and are selected from C 1-20 alkyl, C 5-20 aryl, C 5-20 arylalkyl, C 1-20 alkoxy, C 5-20 aryloxy or C 5-20 arylalkoxy.