title: Convenient route to super-expanded calixpyrroles: synthesis of Calix
abstract: meso-Alkylporphyrinogen-like cyclic oligomers containing furans and pyrroles have been synthesized by "3 + 2" and "4 + 2" approaches. Condensation of 5,5,10,10,15,15-hexaethyl-21, 22-dioxatetrapyrromethane with 2,5-bis[(alpha-hydroxy-alpha, alpha-dimethyl)furan] resulted in the formation of cyclic hexamer and cyclic dodcamer. Effects of catalysts, temperature, inorganic additives, solvent, and reaction concentration were examined.
authors.affiliation: Department of Chemistry, Kangwon National University, Chun-chon 200-701, Korea.
authors.initials: N
authors.lastname: Arumugam
authors.initials: YS
authors.lastname: Jang
authors.initials: CH
authors.lastname: Lee