Using excess of acetate, chloride, bromide, and sulfate salts, the kinetics of Cu(II) incorporation in meso-tetrakis (4-benzyloxyphenyl) porphyrin, in DMF solution, at different temperatures, have been done. The thermodynamic parameters have been calculated and a mechanism of Cu(II) insertion proposed.
Cyclopropanation reactions catalysed by dendrimers possessing one metalloporphyrin active site at the core: linear and sigmoidal kinetic behaviour for different dendrimer generations
作者:Petr Vinš、Abel de Cózar、Iván Rivilla、Kateřina Nováková、Ronen Zangi、Josef Cvačka、Iosune Arrastia、Ana Arrieta、Pavel Drašar、José I. Miranda、Fernando P. Cossío
DOI:10.1016/j.tet.2016.01.013
日期:2016.2
Experimental and computational studies on dendrimers possessing a Fe(porphyrin) catalytic core and polyether dendritic arms show that these macromolecules promote efficiently the (2+1) cycloaddition between a model alkene and diazomethane. The reaction is kinetically efficient and competitive with smaller catalysts. Lower generations of dendrimers exhibit a normal hyperbolic kinetic behaviour, whereas third- and fourth-generation dendrimers show a sigmoidal kinetic profile, compatible with cooperative effects most likely due to aggregation phenomena. This behaviour resembles that observed for Fe(porphyrin) containing biomolecules such as cytochromes and haemoglobin. (C) 2016 Elsevier Ltd. All rights reserved.
Synthesis of tetraphenylporphyrins under very mild conditions
作者:Jonathan S. Lindsey、Henry C. Hsu、Irwin C. Schreiman
DOI:10.1016/s0040-4039(00)85109-6
日期:1986.1
Datta-Gupta, N.; Malakar, D.; Rice, Lesa, Journal of Heterocyclic Chemistry, 1987, vol. 24, p. 629 - 632