Torsional chirality generation based on cyclic oligomers constructed from an odd number of pyrenes

Chem Commun (Camb). 2019 Aug 21;55(65):9618-9621. doi: 10.1039/c9cc03123e. Epub 2019 Jul 18.

Abstract

A Ni(0)-mediated coupling reaction of a 1,8-dibromopyrene gave a series of cyclic pyrene oligomers CPn up to nonadecamer. CP5 and CP7 represent a unique class of asymmetric compounds with no stereogenic chiral centers in terms of their global chirality, which are achieved because of an odd number of pyrenes.