Oligopyrrole macrocycles

Di- and trisulfide linked oligopyrrolic macrocycles 805, 807, and 809 are obtained when appropriate 2,5-free pyrrolic precursors 804, 806, and 808 are reacted with disulfur dichloride (Equations 198-200). The isolated yields were 21%, 34% (R = Me), and 27%, respectively <2005CC2122>. These systems represent the first examples of what might be a general new class of porphyrin analogs. 

Analytical application of oligopyrrole macrocycles 01CCC693. Mechanisms of pyrrole electropolymerization 00CSR283. Organometallic compounds of pyrroles 01AHC(79)115. 

Cation-directed synthesis of organic macrocycles such as crown ethers is a well-established procedure that has been widely utilized for many years. However the use of anionic species for this purpose has only recently begun to be exploited. One of the first examples of anion-directed organic synthesis is the oligopyrrolic macrocycle 13 reported by Sessler (see Fig. 4). This macrocycle was... 

Zaruba, K. Setnicka. V. Charvatova, J. Rusin. O. Tomankova. Z. Hrdlicka, J. Sykora, D. Krai. V. Analytical application of oligopyrrole macrocycles. Collect. Czech. Chem. Commun. 2001, 66. 693. 

The synthesis and biological evaluation of pyrrole macrocycles (i.e., porphyrins, expanded porphyrins, and calixpyrroles) and linear oligopyrroles comprise perhaps the largest body of work published each year that can be classified as pyrrole chemistry. Unfortunately, due to space limitations, the discussion of selected advances in this area could not be included. 

It has been described the formation of porphyrin- and sapphyrin-containing self-assembled monolayers on electrochemically prepared Au surfaces by a multistep approach After electrochemical preparation the Au substrate was characterized by SERS and cyclic voltammetry. SERS characterization was also used to study the basic architecture and properties of the porphyrin- and sapphyrin modified SAMs and their interactions with fluoranthene, 1,10-phenantroline and adenine. In general, it can be proposed that macrocycle oligopyrrole functionalized SAMs could be useful in the analysis and detection of polyaromatic and heterocyclic compounds. 

Oligopyrrole A compound (often macrocyclic) composed of several pyrrole rings. 

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