Synthesis of highly functionalized nitro 10,15, with F, Cl, Br, and I)

MS investigations of the products obtained by electrophilic nitration of tetrasubstituted porphyrin complexes are described. Cu(II)-Porphyrinates, exhaustively derivatized at the so-called 'eastern half ' [dinitro-, bis(arylsulphonylmethyl-)Ключевые слова: Порфирины, электрофильное нитрование, нитрены, масс-спектрометрия.

The attempts of direct substitution of hydrogen in porphyrin macrocyclic systems, with carbanions of weak nucleophilicity, are described. Porphyrins, when converted into the corresponding metal chelates, were reacted with the above mentioned carbanions, and the coordinated central metal atom (e.g., Au III , Sn IV), which reveals considerable electronegativity, played a role of activating group. It could be easily removed from the system after reaction. A number of attempts to substitute hydrogen by carbon nucleophiles led to various products (addition of nucleophile to porphyrin ring, ligands substitution at metal center, etc.). These investigations were successfully finalized for meso-tetraphenylporphyrin-dichlorotin(IV) complex. Further development of this idea may open a new chapter in the functionalization of porphyrins.