6533b7d3fe1ef96bd1261296

RESEARCH PRODUCT

Multiple Catenanes Derived from Calix[4]arenes

Leyong WangAnca BogdanVolker BöhmerMichael BolteMyroslav O. Vysotsky

subject

MultidisciplinaryChemistryStereochemistryCatenaneRing (chemistry)

description

A multicatenane is described in which two belts consisting of four annelated rings attached to the wide rims of two calix[4]arenes are interwoven in such a way that each ring of one belt penetrates two adjacent rings of the other belt and vice versa. The key step of the synthesis of this [8]catenane is the exclusive formation of preorganized heterodimers between a multimacrocyclic tetraurea calix[4]arene and an “open-chain” tetraurea calix[4]arene containing eight ω-alkenyl groups. When a tetraurea calix[4]arene containing four alkenyl groups is used, a bis-[3]catenane is formed analogously.

https://doi.org/10.1126/science.1096688