Abstract
The title compound crystallizes as a di-chloro-methane monosolvate, C(63)H(73)N(3)O(4)·CH(2)Cl(2). The main mol-ecule represents a calix[4]arene and possesses a pinched cone shape, with the two distal para-amino groups at the wide rim of the macrocycle being brought into close proximity due to steric repulsion between the bulky trityl-amino and tert-butyl groups attached to the other two distal positions of the wide rim. In the crystal, the calixarene mol-ecules are assembled by numerous C-H⋯π and van der Waals inter-actions, while the solvent mol-ecules reside in the cavities forming C-H⋯π and Cl⋯π contacts with the phenyl rings of the trityl group.