A　series　of　[tetra-α-(2,2,4-tirmethyl-3-pentoxy)　phthalocyaninato]　metal　complexes(M=Co,　Ni,　Cu,　Zn)were　prepared　by　cyclotetramerization　of　3-(2,2,4-tirmethyl-3-pentoxy)phthalonitrile　with　corresponding　anhydrous　metal　salts,　using　1.8-diazabicyclo[5.4.0]　undec-7-ene　(DBU)　as　the　catalyst.　HPLC　analysis　shows　that　one　isomer　predominates　in　the　product　of　nickel　complex,　while　at　least　two　main　constitutional　isomers　exist　in　the　product　of　other　metal　complexes.　The　complexes　(in　the　form　of　mixture　of　constitutional　isomers)　were　characterized　by　elemental　analyses,　MS,　IR　and　UV-Vis　spectroscopy.