Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 88, Issue 20, Pages 14762-14768Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.joc.3c00949
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A novel cryptand-like anion receptor 1 was synthesized in reasonable yield by a one-step condensation reaction. This receptor showed a preference for binding AcO- over other monovalent anions in CH3CN, forming a stable 1:1 binding complex.
A novel cryptand-like anion receptor 1 was synthesized in reasonable yield by a one-step condensation reaction. The UV-vis spectroscopic titrations indicated that cryptand 1 bound AcO- in preference to other monovalent anions (including its competing F- and H2PO4-) in CH3CN, generating a 1:1 binding complex with K-a = 51,000 M-1. Moreover, the crystal structures revealed that the acetate ion was encapsulated inside the cryptand's cavity in a 1:1 manner, through multiple N-HO hydrogen bonds (although having two different crystal forms).
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