Novel Ionophores with 2n-Crown-n Topology: Anion Sensing via Pure Aliphatic C–H···Anion Hydrogen Bonding
摘要:
A series of novel coronands having a 2n-crown-n topology based on trioxane (6-crown-3) derivatives are designed and characterized. These neutral hosts can sense anions through pure aliphatic C-H hydrogen bonding (HB) in condensed phases due to the unusual topology of 2n-crown-n. C-H bonds are strongly polarized by two adjacent oxygen atoms in this scaffold. These hosts provide a rare opportunity to modulate anion binding strength by changing the electronic nature of aliphatic C-H bonds and offer ease of synthesis.
Novel Ionophores with 2<i>n</i>-Crown-<i>n</i> Topology: Anion Sensing via Pure Aliphatic C–H···Anion Hydrogen Bonding
作者:Genggongwo Shi、Changdev G. Gadhe、Sung-Woo Park、Kwang S. Kim、Jongmin Kang、Humaira Seema、N. Jiten Singh、Seung Joo Cho
DOI:10.1021/ol402819m
日期:2014.1.17
A series of novel coronands having a 2n-crown-n topology based on trioxane (6-crown-3) derivatives are designed and characterized. These neutral hosts can sense anions through pure aliphatic C-H hydrogen bonding (HB) in condensed phases due to the unusual topology of 2n-crown-n. C-H bonds are strongly polarized by two adjacent oxygen atoms in this scaffold. These hosts provide a rare opportunity to modulate anion binding strength by changing the electronic nature of aliphatic C-H bonds and offer ease of synthesis.
De Bievre et al., Bulletin des Societes Chimiques Belges, 1959, vol. 68, p. 550,551