159649-98-6

Upstream product

• 6046-93-1 copper(II) acetate monohydrate 
• 14172-91-9 (tetraphenylporphyrin)copper(II) 
• 142-71-2 copper diacetate 
• 917-23-7 5,15,10,20-tetraphenylporphyrin 

Downstream Products

• 867000-51-9 copper(II) β-tetrakis(trifluoromethyl)-meso-tetraphenylporphyrin 

Relevant academic research and scientific papers

An improved protocol for the synthesis of 2-nitro-7,8,17,18-tetrabromo-5,10,15,20-tetraphenylporphyrin and its conformational aspects by electrochemistry and spectroscopy

An improved methodology is reported for the synthesis of 2-nitro-7,8,17,18-tetrabromo-5,10,15,20- tetraphenylporphyrin by the β-mononitration of 2,3,12,13-tetrabromo-5,10,15,20-tetraphenylporphyrin using 50% HNO3. The copper derivative of this

Free-base porphyrins with localized NH protons. Can substituents alone stabilize the elusive: Cis tautomer?

The elusive cis tautomer of free-base porphyrins has recently been isolated and structurally characterized in the form of a supramolecular complex. The question as to whether a suitable set of peripheral substituents might lead to a stable cis tautomer in the absence of supramolecular interactions, however, remains unanswered and is one we have attempted to address here by means of density functional theory calculations. The fact that many antipodally β-tetrasubstituted tetraphenylporphyrin derivatives exhibit localized central protons attached to the β-unsubstituted pyrrole rings led us to surmise that β-tetrasubstitution of adjacent pyrrole rings might lead to a porphyrin cis tautomer, an idea that proved fruitful. Indeed, for the adjacently substituted tetraphenylporphyrin derivative H2[adj-(CF3)4(CH3)4TPP], the global energy minimum proved to be a highly saddled cis tautomer, with the trans tautomer about 0.07 eV higher in energy. It is important to underscore, however, that the asymmetric β-substitution pattern is far from the only factor contributing to the stability of the cis tautomer for this porphyrin. A strongly saddled conformation resulting from meso-β steric interactions also helps alleviate the repulsion between the two central NH protons, thereby stabilizing the cis tautomer relative to the trans.

Synthesis of β-Bromo-Substituted Cu(II) Tetraphenylporphyrinates

Bromination reactions of Cu(II) 5,10,15,20-tetraphenylporphyrinate with N-bromosuccinimide in chloroform and chloroform–dimethylformamide mixture and complexation of 2-bromo-5,10,15,20-tetraphenylporphyrin and 2,3,12,13-tetrabromo-5,10,15,20-tetraphenylporphyrin with copper(II) acetate in dimethylformamide have been studied. Mono-, tetra-, and octabromo-substituted Cu(II) porphyrinates have been synthesized. Obtained compounds have been identified by electronic absorption spectroscopy, IR spectroscopy, mass spectrometry, and elemental analysis.

Complex formation of β-brominated tetraphenylporphyrins and metal exchange of their cadmium complexes with d-metal salts in dimethylformamide

Complex formation of zinc and copper(II) acetates with tetraphenylporphyrin, 2-bromo-5,10,15,20-tetraphenylporphyrin, 2,3,12,13-tetrabromo-5,10,15,20-tetraphenylporphyrin, and 2,3,7,8,12,13,17,18-octabromo-5,10,15,20-tetraphenylporphyrin in N,N-dimethylformamide has been studied. The rate constants determined in the study of the complex formation and the metal exchange reactions have been compared.

Spectral and complex-forming properties of ?-bromo-substituted porphyrins in N,N-dimethylformamide

Contributions of structural and electronic effects to the reactivity and chromophore properties of tetrapyrrole macrocycles modified by bromine atoms were revealed on the basis of the kinetic data on the complex formation of 2-bromo-5,10,15,20-tetraphenyl