S-EPMC10711453 - A tri(ethylene glycol)-tethered Morita–Baylis–Hillman dimer in the formation of macrocyclic crown ether-paracyclophane hybrid structures† † Electronic supplementary information (ESI) available: Experimental details for the synthesis and the characterization of compounds 1, 2a,b and their intermediates. CCDC 2286050. For ESI and crystallographic data in CIF or other electronic format see DOI: https://doi.org/10.1039/d3ra06792k