Solvent effects on NMR. Differential shifts of ring protons of heterocyclics in dimethyl sulfoxide was written by Rao, G. Venkoba;Balakrishnan, M.;Venkatasubramanian, N.. And the article was included in Indian Journal of Chemistry in 1975.HPLC of Formula: 6924-68-1 This article mentions the following:
The NMR spectra of pyrazine, pyridine, triazine, pyrrole, imidazole, Et furan-2-carboxylate, Me 4-pyridylacetate, and Et pyrazinecarboxylate are examined in (D3C)2SO. The differential shifts of ring protons are accounted for in terms of an interaction between the lone pair on the ring hetero atom and the pos. end of the sulfoxide dipole in the solvent. In the experiment, the researchers used many compounds, for example, Ethyl pyrazine-2-carboxylate (cas: 6924-68-1HPLC of Formula: 6924-68-1).
Ethyl pyrazine-2-carboxylate (cas: 6924-68-1) belongs to pyrazine derivatives. Pyrazine heterocycles and their benzo derivatives possess many interesting properties, including chemical reactivity profiles, and have diverse applications in total synthesis, medicine, chemical biology, materials, dyes, and imaging. Pyrazines undergo nearly all of the same reactions as pyrimidines, from nucleophilic substitution (SNAr) to palladium-catalyzed cross coupling reactions.HPLC of Formula: 6924-68-1