25,27‐Bis(acryloyloxy)‐5,11,17,23‐tetra‐tert‐butyl‐26,28‐dihydroxycalix[4]arene

The title compound, C50H60O6, is a new p-tert-butylcalix[4]arene derivative, adopting a 1,3-alternate conformation, with the complete mol­ecule generated by twofold rotation symmetry. In the crystal structure, the mol­ecules associate into layers in the ac plane. The three methyl groups of one tert-butyl group are disordered over two positions with site-occupancy factors approximately in the ratio 3:1.