56857-30-8Relevant academic research and scientific papers
Breaking thiacalix[4]arene into pieces-a novel synthetic approach to higher calixarenes bearing mixed (-S-, -CH2-) bridges
Dvorakova, Hana,Eigner, Vaclav,Kaiser, Lukas,Landovsky, Tomas,Lhotak, Pavel,Salvadori, Karolina
, p. 36934 - 36941 (2021/12/02)
A novel approach to calix[5-7]arenes possessing mixed (S and CH2) bridges within the skeleton is based on the reaction of thiacalix[4]arene monosulfoxide with BuLi leading to a linear phenolic tetramer in essentially quantitative yield. This key intermedi
Synthesis and Inclusion Properties of Sulfur-Bridged Analogs of Acyclic Phenol-Formaldehyde Oligomers
Ohba, Yoshihiro,Moriya, Kazuhiko,Sone, Tyo
, p. 576 - 582 (2007/10/02)
A series of compounds in which a part or all of the methylene bridges of acyclic p-methyl- and p-t-butylphenol-formaldehyde tetramers were replaced by sulfur bridge(s) was synthesized.It was found that though the sulfur-bridged tetramers formed crystalline host-guest complexes with a variety of organic compounds, they were different from the parent tetramers regarding their inclusion behavior.The number and position of the sulfur bridge(s), as well as the p-substituent of phenol in the tetramers, had a great influence upon the inclusion property.The thermal stability of complexes of the sulfur-bridged tetramers (SSS-a,b) with benzene, as estimated from their thermal dissociation rates, are lower than those of the parent tetramers (CCC-a,b).
