title: Syntheses of core-modified corroles by three different [3 + 1] methodologies.
abstract: Three new methods for syntheses of modified oxa corroles bearing one meso free carbon in reasonably good yields are reported. The formation of the meso carbon bridge and the direct pyrrole-pyrrole linkage occur in a single step by a simple condensation and coupling with TFA as a catalyst with appropriate precursors. The reactions are optimized with different conditions by varying the meso substituents, acid catalyst concentration, and the nature of the solvent to afford corroles in good yields.
authors.affiliation: Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India.
authors.forename: Jeyaraman
authors.initials: J
authors.lastname: Sankar
authors.forename: Harapriya
authors.initials: H
authors.lastname: Rath
authors.forename: Viswanathan
authors.initials: V
authors.lastname: PrabhuRaja
authors.forename: Tavarekere K
authors.initials: TK
authors.lastname: Chandrashekar
authors.forename: Jagadese J
authors.initials: JJ
authors.lastname: Vittal