235107-75-2Relevant academic research and scientific papers
Facile synthesis and binding properties of C2ν container host based on resorcin[4]arene
Peak, Kyungsoo,Ihm, Chaesang,Ihm, Hyejae
, p. 4697 - 4700 (1999)
Two new C2ν container hosts were synthesized by capping of catechol- or resorcinol-fenced resorcin[4]arene with 1,2,4,5-tetrakis(bromomethyl)benzene and their Ka values were caculated directly from 1H NMR spectra. These hosts showed the binding properties for alkyl alcohols, methylene chloride, and tetrahydrofuran in CDCl3 or (CDCl2)2 at -40 deg C.
Molecular engineering. Part 5.1 Tuning the constrictive binding of container host by the atomic order of portal pillars
Ihm, Chaesang,Kim, Minkyu,Ihm, Hyejae,Paek, Kyungsoo
, p. 1569 - 1575 (2007/10/03)
Two D4h container hosts 12 and 13 with 4(CH2-O-bridge-O-CH2) portal pillars were obtained in good yields by stepwise synthetic routes and showed complementary complexation behaviors to their analogues with (O-CH2-bridge-CH2-O)4 portal pillars. 1H NMR spectral chemical shifts of host's inward-turned OCH2O protons were sensitive to guest change. The stability orders of hemicarceplexes were 12-p-(CH3CH2)2C6H4 > 12-p-(CH3O)2C6-H4 ? 12-o-(CH3O)2C6H4 > 12-m-(CH3O)2C6H4 and 13-CH3COCH2CH3 > 13-CH3COCH2CH(CH3)2 > 13-CH3-CON(CH3)2 > 13-CH3COOCH2CH3 > 13-CH3CH2CON(CH3)2 in terms of the activation energy barrier for decomplexation. Large solvent effects on the activation energy for decomplexation of hemicarceplexes were observed.
