Abstract
The synthesis of the first calixcrowns derived from p-tert-butyldihomooxacalix[4]arene is reported. Both are, in solution at room temperature, in the cone conformation, which is shown by NMR studies. Their inherently chirality is also evident from 1H NMR experiments.
Notes
To indicate the number of phenol unities that a molecule has, a bracket number is inserted between “calix” and “arene”, being the p-substituent designated by the name and wrote before
Chiral complexing agent, S (+)-1-(9-anthryl)-2,2, 2-trifluoroethanol.