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Deuterium exchange of pyrrolic NH protons accelerated by fluoride and bicarbonate in CDCl<sub>3</sub>, CD<sub>3</sub>CN, and DMSO-<i>d</i><sub>6</sub>
- Heo, Nam Jung;
- Oh, Ju Hyun;
- Sessler, Jonathan L.;
- Kim, Sung Kuk
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2초록
The anion binding features of pyrrole- and benzene-strapped calix[4]pyrroles 1 and 2, in particular, for F- and HCO3- have been examined by means of NMR spectroscopy in DMSO-d6, CDCl3, and CD3CN, respectively. Receptors 1 and 2 were found to bind F- and HCO3- tightly via slow binding/release equilibria in these solvents. A combination of 1H and 19F NMR spectroscopic analyses with mass spectrometry revealed that contacting calix[4]pyrroles 1 and 2 with F- and HCO3- salts prompts deuterium exchange of the NH protons in the three nominally aprotic deuterated solvents considered in this study.
키워드
RECEPTOR CHEMISTRY HIGHLIGHTS; ANION-BINDING; RECOGNITION; CAPTURE; CHEMOSENSORS
- 제목
- Deuterium exchange of pyrrolic NH protons accelerated by fluoride and bicarbonate in CDCl<sub>3</sub>, CD<sub>3</sub>CN, and DMSO-<i>d</i><sub>6</sub>
- 저자
- Heo, Nam Jung; Oh, Ju Hyun; Sessler, Jonathan L.; Kim, Sung Kuk
- 발행일
- 2025-01
- 유형
- Article
- 권
- 12
- 호
- 2
- 페이지
- 599 ~ 606