José Elguero

TL;DR: In this article, a theoretical study of the self-association of homochiral and heterochiral dimers of three series of cyclic alpha-hydroxy-carbonyl derivatives has been carried out.

TL;DR: In this paper, the 1H and 13C NMR spectra of the 6,7,14,15-tetrahydrobisbenzimidazo[1,2-a:1′,2′-e][1,5]diazocine 3 has been recorded.

TL;DR: In this paper, a statistical treatment has been used to demonstrate the impossibility of calculating the magnetic susceptibilities and the anisotropies of the C-C and C-H bonds from the collection of chemical shifts reported by Simon and co-workers as they have found the model of McConnell and the ApSimon to be inconsistent with experimental values.

TL;DR: The molecular structures of two aminophosphonium salts (bromide and tetrafluoroborate) have been determined by X-ray analysis as discussed by the authors, and a coupling of ∣1.5∣ Hz between the 15N and the 31P nuclei, separated by three bonds, was observed experimentally for the bromide in CDCl3 solution, which appears to be a classical 3JN-P across the covalent bonds and not a 3hJN -p across the IMHB.

TL;DR: The cyclisation of 4-acetyl-5(or 3)-chloropyrazole hydrazones into pyrazolo[3,4-c]pyrazoles does not proceed when the pyrazole is a N-methylated derivative or when the hydrazone is a phenylhydrazone as mentioned in this paper.