Transformation of π-conjugated macrocycles: from furanophanes to napthalenophanes

Chem Commun (Camb). 2022 Dec 8;58(98):13652-13655. doi: 10.1039/d2cc05434e.

Abstract

Applying sequential Diels-Alder cycloaddition and deoxygenation to small π-conjugated furan macrocycles fully converts them to 1,4-naphthalophanes with either ethylene or acetylene spacers, depending on the reaction conditions. 1,4-Napthalenophane tetraene exhibits a 1,3-alternating conformation in the solid state, inclusion of solvent molecules within the macrocycle, and low reduction potentials.