Synthesis 2022; 54(23): 5281-5290
DOI: 10.1055/a-1900-3563
paper

Synthesis of Shape-Persistent meta-Arylene-Butadiynylene Macrocycles with a Different Ring Size

,
Dorota Pawelczyk
,
,
,
Nurbey Gulia
The research has been supported by the National Science Centre Poland­ (Grants UMO-2018/31/N/ST5/00450 and UMO-2018/31/B/ ST5/00899).


Abstract

A series of meta-phenylene-butadiynylene macrocycles was obtained by homocoupling of terminal bis(ethynyl) precursors using Eglinton conditions. Cyclotetramers and cyclopentamers were isolated from the mixture. However, a hexameric analogue was synthesized using a step-by-step approach. Molecular structures of the resulting macrocycles obtained by X-ray single-crystal analysis manifest conformational diversity, indicating significant flexibility of the meta-arylene-butadiynylene macrocycle conjugated skeleton.

Supporting Information



Publication History

Received: 29 April 2022

Accepted after revision: 14 July 2022

Accepted Manuscript online:
14 July 2022

Article published online:
31 August 2022

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