SYNTHESIS, 1H NMR, 13C NMR SPECTRA AND CONFORMATIONAL PREFERENCE OF OPEN CHAIN LIGANDS ON LIPOPHILIC MACROCYCLES

Article abstract of DOI:10.1016/0040-4020(82)80176-2

Several open chain ligands (polipodands) 3 and 4 have been synthesized introducing short oligoethylene glycol units (-CH2CH2O)mCH3, (m=1,2) on lipophilic matrices represented by cyclic tetra-1 and octa-2 oligomers obtained from the base catalyzed reaction of p-butylphenol or p-octylphenol and formaldehyde. 1H NMR and 13C NMR spectral date have been used to establish the conformational freedom of the ligands, which is important for cation binding studies.