Synthesis, structure, and complexation behavior of 14‐ and 28‐membered partially unsaturated thiacrown ethers

Metal-free multicomponent synthesis of novel macrocyclic tetrathiadienes with cyano and amino groups

“…For unsaturated thiacrown ethers oxidative transformations and Z/E isomerization of double bonds upon heating have been described. 22 It was shown that tetrathiadiene macrocyclic rings (-S-CH]CH-S-) 2 preferably exist in a stepped conguration, forming close crystal packing (column Scheme 1 Evolution of the multicomponent reaction of malononitrile with aldehydes and SH acids in the synthesis of six-to fourteenmembered hetero(macro)cycles.…”

“…For unsaturated thiacrown ethers oxidative transformations and Z / E isomerization of double bonds upon heating have been described. 22 It was shown that tetrathiadiene macrocyclic rings (–S–CH CH–S–) 2 preferably exist in a stepped configuration, forming close crystal packing (column structures) provided by tight (zigzag-like) non-covalent contacts between the sulfur atoms of the neighboring rings, which are similar for hydrogen and π–π stacking bonds. 23 These patterns of intermolecular contacts determine the properties of conducting materials and organic electrodes.…”