Synthesis and properties of some new ditopic thiacyclophanes
Abstract
Intermolecular coupling of 1,2,4,5-tetrakis(bromomethyl)benzene with 1,2-bis(sulfanylmethyl)benzene (2 equiv.) under high dilution conditions in the presence of NaOH in benzene–methanol yields the new ditopic thiacyclophanes 3 and 4 in good yield. An X-ray crystal structure of 5H,7H, 10H,12H,17H,19H,22H,24H-5,11,18,23-tetrathia-8,2;9,20-dimethenodibenzo[a,k]cycloeicos-20-ene 3 is described.