Catalytic Hydrogenation of meso-Octamethylporphyrinogen (Calixpyrrole)
Date de parution
Chemistry - A European Journal, Wiley, 2010/16/4/4224-4230
Hydrogenation of meso-octamethylporphyrinogen (calixpyrrole) with a number of heterogeneous catalysts under different experimental conditions has been investigated. GC-MS analyses of the reaction mixtures showed the formation of one to four products in low to moderate yields: three of them were diastereoisomers of the product derived from half-hydrogenation of the substrate, and displayed alternating pyrrolidine and pyrrole rings, while the fourth was the all-cis saturated product. An acidic medium was necessary to achieve hydrogenation. However, the use of too strongly acidic solvents or additives was detrimental to the stability of the substrate and/or the catalyst.
Type de publication