Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 5-Chloro-1-methyl-4-nitroimidazole, is researched, Molecular C4H4ClN3O2, CAS is 4897-25-0, about Pyrrolopyrimidine nucleosides. XIV. The synthesis of 7-(β-D-ribofuranosyl)pyrrolo[2,3-d]pyrimidine-4-selone and certain related derivatives.Application of 4897-25-0.
Treatment of 4-chloro-7-(β-D-ribofuranosyl)pyrrolo[2,3-d]pyrimidine with selenourea in H2O containing HCO2H at steam bath temperature gave I, which reacted with alkylhalides to give the corresponding II (R = Me, CH2CH:CH2, CH2Ph, CH2C6H4NO2-p, 1-methyl-4-nitroimidazol-5-yl). Thus, I was treated with MeI at room temperature for 1 hr to give crystalline II (R = Me).
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Reference:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts