A new one pot and solvent-free synthesis of nickel porphyrin complex

Abstract

A new one pot and solvent-free synthesis of nickel porphyrin complex is described. This is prepared by condensing pyrrole, benzaldehyde, nickel (II) chloride, and 1,8-diazabicyclo [5.4.0] undec-7-ene as a base. This new method allows higher yields, reduced reaction times, ease of handling, and follows principles of green chemistry. The same complex is also prepared by an alternative route, i.e. first, the porphyrin is prepared and then the insertion of metal ion.

Microwave Synthesis Under Solvent-Free Conditions and Spectral Studies of Some Mesoporphyrinic Complexes

“…In recent years, research specialists concerned with obtaining pharmacologically active mesoporphyrins have been focused on developing new ecological methods as an alternative method to the classical way in order to decrease the reaction times, improving the degree of purity of the final products and implicitly increasing the reaction yields [15,16,17,18,22,23,24,25,26,18,22].…”

“…In this regard, this paper aims to develop an ecological, efficient and versatile synthetic method, able to produce A 3 B and A 4 type metalloporphyrins, with a high degree of purity and a good reaction yield. Solvent free reactions activated by microwave irradiation have become increasingly important in the synthesis of mesoporphyrinic complexes due to their advantages such as shorter reaction times, higher reaction yields, absence of solvent in the reaction mixtures and increased selectivity of the synthetic reactions [15,16,17,18].…”

Control of the distance between porphyrin sensitizers and the TiO2 surface in solar cells by designed anchoring groups

“…into one single observable band in the Ni complex, [64] due to the higher symmetry of the metalloporphyrin. [65,66] Additionally, complexation with nickel leads to a blue shift (5 nm) of the Soret band.…”

A Comparative Study Between Different Corrosion Protection Layers

“…The common meso-substituted porphyrins are tetraphenyl porphyrin (R = phenyl) and ortho, meta or para substituted phenyl porphyrins. Usually, for the mesotetraphenylporphyrin synthesis is used pyrole and an aldehyde such as benzaldehyde, salicylaldehyde, and so on [12].…”