p-Phenylcalix [4] arene (1 l), in the cone conformation, is a basket-shaped compound containing a large cavity and, therefore, is of interest for studies of host-guest complexation. Ita unequivocal synthesis has been achieved by the stepwise method of Hayes and Hunter, by starting with 2-bromo-4-phenylphenol and adding methylene and p-phenylphenol groups sequentially until a linear tetramer (9) is attained. Removal of the bromine followed by acid ...