title: Selective functionalization of methylene bridges of calix[6]arenes. Isolation and identification of stable conformers of methyl ether of p-tert-butylcalix[6]arene.
abstract: Direct disubstitution at the methylene bridges of p-tert-butylcalix[6]arenemethyl ether has been achieved for the first time using a lithiation-substitution protocol. Two stable conformers have been isolated using column chromatography, and their structures have been unambiguously confirmed from 1D, 2D and variable temperature NMR studies and single crystal X-ray structure analysis.
authors: Department of Chemistry, UGC Centre of Advance Study-I, Guru Nanak Dev University, Amritsar-143 005, India. kamaljit.chem@gndu.ac.in.
authors: Shafali
authors: S
authors: Arora
authors: Shivali
authors: S
authors: Sharma
authors: Venus S
authors: VS
authors: Mithu
authors: Chang
authors: C
authors: Hee-Lee
authors: Kamaljit
authors: K
authors: Singh