Next Article in Journal
New Anticandidous 2-Alkylthio-6-aminobenzothiazoles
Previous Article in Journal
Combinatorial Libraries on Rigid Scaffolds: Solid Phase Synthesis of Variably Substituted Pyrazoles and Isoxazoles
Article Menu

Export Article

Open AccessArticle
Molecules 1997, 2(2), 31-35; doi:10.3390/feb97p1

17O NMR of Enamino-Diesters: Intramolecular Hydrogen Bonding in 5-Alkylaminomethylene-2,2-dimethyl-1,3-dioxane-4,6-diones

Institute of Organic Chemistry, University of Lausanne, BCH, CH-1015, Lausanne-Dorigny, Switzerland
Received: 20 December 1996 / Accepted: 17 January 1997 / Published: 25 February 1997
View Full-Text   |   Download PDF [26 KB, uploaded 18 June 2014]


Natural abundance 17O NMR spectra of a series of 5-alkylaminomethylene-2,2-dimethyl-1,3-dioxane-4,6-diones, recorded in acetonitrile solution, are reported. The δ(17O) values correlate well with those of 4-alkylaminobut-3-en-2-ones and with the pKa values of amines. The effects of the N-alkyl groups on the 17O shift values is diminished, owing to the resonance effects of the alkoxy groups. The shift difference (DδHB) between the two carbonyl groups is mainly attributed to the intramolecular hydrogen bonding and depends on the donor property of the amino group. View Full-Text
Keywords: NMR; 17O NMR; enamino-diesters; intramolecular hydrogen bonding NMR; 17O NMR; enamino-diesters; intramolecular hydrogen bonding
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Zhuo, J.-C. 17O NMR of Enamino-Diesters: Intramolecular Hydrogen Bonding in 5-Alkylaminomethylene-2,2-dimethyl-1,3-dioxane-4,6-diones. Molecules 1997, 2, 31-35.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Molecules EISSN 1420-3049 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top