Lithiation of <i>meso</i>-Octamethylcalix[4]pyrrole: A General Route to <i>C</i>-Rim Monosubstituted Calix[4]pyrroles
作者:Pavel Anzenbacher,、Karolina Jursíková、James A. Shriver、Hidekazu Miyaji、Vincent M. Lynch、Jonathan L. Sessler、Philip A. Gale
DOI:10.1021/jo005610w
日期:2000.11.1
meso-octamethylcalix[4]pyrrole provides a straightforward synthetic route to new, C-rim monosubstituted calix[4]pyrroles. A variety of electrophiles were used, resulting in calix[4]pyrroles with appended functional groups including carboxyl, ester, iodo, and formyl. This method was optimized to give maximum yields of the monosubstituted derivatives with lowest possible contamination by di- and trisubstituted
Calix[4]pyrroles: C-rim substitution and tunability of anion binding strength
作者:Philip A. Gale、Jonathan L. Sessler、William E. Allen、Nicolai A. Tvermoes、Vincent Lynch
DOI:10.1039/a700685c
日期:——
Electron-rich and electron-deficient C-rim substituted
calix[4]pyrroles 1–4 are synthesised and the anion binding ability
of these receptors is found to be dependent upon the C-rim
substituents.
The preparation of two distinct calix[4]pyrrole-modified silica gels is reported. These systems, designed to investigate the binding characteristics of calix[4]]pyrroles with anionic and neutral substrates, also provide a new solid support for the HPLC separation of nucleotides, oligonucleotides, N-protected amino acids and perfluorinated biphenyls. Binding affinities for the interaction of anions with calix[4]pyrrole amide derivatives are also reported; these were determined from H-1 NMR spectroscopic analyses carried out in CD2Cl2.
Zhou, Changzheng; Liu, Kai; Qiu, Hongdeng, Journal of Chemical Research, 2006, # 6, p. 398 - 401