Nucleophilic substitution in 4-bromo-5-nitrophthalodinitrile: VIII. Synthesis of 4-(benzotriazol-1-yl)-5-[4-(1-methyl-1-phenylethyl)phenoxy]phthalodinitrile and phthalocyanines on its basis

Nucleophilic aromatic substitution of the bromine atom in 4-bromo-5-nitrophthalodinitrile by a 2-aminophenylamine residue followed by conversion of the resulting compound to 4-(1-benzothiazol-1-yl)-5-nitrophthalodinitrile and nucleophilic substitution of the nitro group by a 4-(1-methyl-1-phenylethyl)-phenoxy group gave 4-(benzotriazol-1-yl)-5-[4-(1-methyl-1-phenylethyl)phenoxy]phthalodinitrile. The latter product was reacted with certain metal acetates and chlorides to obtain the corresponding metal complexes of octasubstituted phthalocyanines. Spectral properties of the complexes were studied.     

Synthesis and Properties of Extracomplexes of Tetrasubstitued Phthalocyanines

Extracomplexes of metals of groups III and IV of the periodic system with tetrasubstitued phthalocyanines containing halogen atoms, nitro-, amino-, hydroxy-, cyano-, and tert-butyl groups as substituents were synthesized. Their spectral and other properties were characterized.     

Preparation of Submicron Chitosan-Alginate Particles and Study of Their Selective Sorption Properties with Respect to Amphiphilic Organic Compounds

Russian Journal of General Chemistry - The effect of the composition of mixed dilute solutions of chitosan and sodium alginate on the size, ζ-potential, and weight yield of the submicron...     

Synthesis and properties of tetra-4-morpholinyl(piperidinyl)-5-R-substituted phthalocyanines

Demetallation of magnesium tetra-4-morpholinyl(piperidinyl)-5-R-substituted phthalocyanines was performed to obtain the corresponding metal-free phthalocyanines. Their electronic absorption spectra were shown to depend on the nature of the solvent. It was found that both the saturated heterocycle and the oxyaryl substituent have almost no effect on the position of the absorption maximum.     

Nucleophilic Substitution in 4-Bromo-5-nitrophthalodinitrile: V. Synthesis of 5-Nitro-4-(4-R-phenoxy)phthalodinitriles and Phthalocyanines Derived from Them

A series of aryloxy-substituted phthalodinitriles were prepared by nucleophilic aromatic substitution of bromine in 4-bromo-5-nitrophthalodinitrile, and the corresponding phthalocyanines were synthesized. The physicochemical properties of phthalocyanines depend on the substituent in the aryl moiety.     

Metal Phthalocyanines with Undecyloxybenzoic Acid Residues,and Their Mesomorphic Properties

Acylation of 4-amino-5-nitro-, 5-amino-4-bromo-, 5-amino-4-phenoxy-, 4-hydroxy-5-nitro-, 3- and 4-hydroxyphtalonitriles with p-undecyloxybenzoyl chloride gave the corresponding acyl derivatives which were used to prepare copper and cobalt phthalocyanines. Physicochemical properties of the resulting products were studied. The synthesized metal complexes all exhibit mesomorphic properties.     

Cobalt phthalocyanine derivatives supported on TiO2 by sol–gel processing: Part 2. Activity in sulfide and ethanethiol oxidation

The catalytic activity of cobalt(II) 2,9,16,23-tetrasulphophthalocyanine and cobalt(II) 2,9,16,23-tetra(chlorosulphonyl)phthalocyanine covalently bonded to a TiO₂ matrix by sol–gel processing was investigated for sulfide and ethanethiol (CH₃CH₂SH) liquid-phase oxidation. A comparison of the kinetic data as well as the state of active component by using electron spectroscopy in dependence on precursors was carried out. Kinetic data shows that the most stable and active catalysts for ethanethiol oxidation are both CoPc(SO₃H)₄ and CoPc(SO₂Cl)₄ in TiO₂ from Ti(OⁱPr)₄, whereas in the case of Na₂S oxidation in neutral medium the activity of the former is higher.     

The kinetics of proton transfer from octaphenylsubstituted tetraazaporphyrin to organic bases in benzene

The acid-base interaction of octa(m-trifluoromethylphenyl)tetraazaporphin with pyridine, 2-methylpiridine, morpholine, benzylamine, piperidine, n-butylamine, diethylamine, tert-butylamine, and triethylamine in benzene was studied. It was found that intermolecular transfer of spatially screened NH-group protons from octa(m-trifluoromethylphenyl)tetraazaporphin to morpholine, benzylamine, piperidine, n-butylamine, and tert-butylamine is characterized by unusually low values of rate constants. The effect of the structure of octa(m-trifluoromethylphenyl)tetraazaporphin, octa(n-bromophenyl)tetraazaporphin, octa(n-bromophenyl)tetraazaporphin, and octa(n-nitrophenyl)tetraazaporphin, and the nature of a base on the kinetic parameters of acid-base equilibrium is shown. A structure for complexes with proton transfer of octaphenylsubstituted tetraazaporphirins is suggested. It is revealed that they are subject to decomposition over time with the formation of low molecular colorless products.     

Synthesis and Properties of Copper Tetra-4-lauryloxyphthalocyanine

Copper tetra-4-lauryloxyphthalocyanine was synthesized. Its electronic absorption spectra show that the complex is associated in organic solvents. The shape of the spectrum and the positions of the absorption bands are virtually independent of the solvent. The compound exhibits thermotropic and lyotropic mesomorphism.