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Determining hydrogen-bond strengths in the solid state by NMR: the quantitative measurement of homonuclear J couplings.
Hydrogen-bonding strengths in the solid state are quantitatively determined by the accurate measurement of 15N-15N J couplings using a straightforward 2D MAS NMR spinecho approach.
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Scalar coupling constants across the intramolecular NHN hydrogen bond of symmetrically and non‐symmetrically substituted 6‐aminofulvene‐1‐aldimines
Multinuclear liquid state magnetic resonance experiments have been performed on two seven‐membered 15N‐labeled H‐chelates of the 6‐aminofulvene‐1‐aldimines type in order to characterize the strongExpand
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Multi‐Component Solvent‐Free versus Stepwise Solvent Mediated Reactions: Regiospecific Formation of 6‐Trifluoromethyl and 4‐Trifluoromethyl‐1H‐pyrazolo[3,4‐b]pyridines.
The regiospecific synthesis of 6-fluoromethyl-pyrazolopyridines (IV) is achieved in high yields via a three-component reaction under solvent-free conditions.
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Study on the mutagenicity of nifurtimox and eight derivatives with the L-arabinose resistance test of Salmonella typhimurium.
The mutagenicity of nifurtimox (nfx) and 8 nfx analogues has been investigated with the L-arabinose forward-mutation assay of Salmonella typhimurium. The nfx analogues tested were obtained byExpand
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The direct detection of a hydrogen bond in the solid state by NMR through the observation of a hydrogen-bond mediated (15)N [bond] (15)N J coupling.
A new method for detecting hydrogen bonds in the solid state is presented. Using two-dimensional NMR correlation experiments, it is shown that a hydrogen-bond mediated J coupling can be observed in aExpand
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Substituent effects on the 15N NMR Parameters of Azoles
The 15N chemical shifts and a large collection of coupling constants pertaining to azoles have been gathered from the literature. To complete this collection and to check some anomalies, the spectraExpand
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Photophysics of the 2-(2′-hydroxyphenyl)perimidine: On the fluorescence of the enol form
Abstract The photophysical behaviour of 2-(2′-hydroxyphenyl)perimidine (6), which possesses a strong intramolecular hydrogen bond is evidenced as due to the non-transferred enol form. This compoundExpand
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Structures of Hemi-Curcuminoids in the Solid State and in Solution†
This work was financed by the Spanish Ministerio de Ciencia e Innovacion (MICINN) (CTQ2010-16122) and the Ministerio de Economia y Competitividad (MEC) (CTQ2012-35513-C02-02) and by the ComunidadExpand
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