V. E. Zavodnik

TL;DR: The structure of 6,8-dibromo-2-(5-nitrofuryl-2)-4, 4-diphenyl-1,2-dihydro-4H-3,1-benzoxazine was investigated by XSA as discussed by the authors and a stacking interaction between the nitrofuran fragment of one molecule and the condensed benzene ring of the other was detected in the crystal.

TL;DR: The 4,5-Dihydrodiazoles containing furyl substituents in positions 4 or 6 were obtained by condensation of hydrazine hydrate and 6-ethoxy carbonylcyclohexenones as mentioned in this paper.

Abstract: The alkylation of 3-cyano-4-methoxymethyl-6-methyl-2(1H)-pyridone by active halomethylene compounds has been studied. It was shown that the reaction of the pyridone with methyl- and ethylchloroacetates and phenacyl and p-bromophenacyl bromides occurs to give N- and O-structural isomers. Only the N-derivatives are separated from the reaction mixture when the pyridone is alkylated with iodoacetamide. It was found that 2-aroylmethyl-3-cyano-4-methoxymethyl-6-methylpyridines cyclize in the presence of KOH to 3-amino-2-aroyl-4-methoxymethyl-6-methylfuro[2,3-b]pyridines. The molecular structure of 3-amino-2-benzoyl-4-methoxymethyl-6-methylfuro[2,3-b]pyridine has been studied using an X-ray analytical method.

TL;DR: In this article, the reduction of 2-nitrophenyldifurylmethane with SnCl2 leads to an indolenyl ketone as a result of intramolecular heterocycloaddition of the intermediately formed nitroso derivative.

TL;DR: In this paper, the reaction does not stop at the step involving formation of 2-hydroxyarylfuryl-methanes but proceeds further with opening of one of furan rings and recycling to 3-furylbenzo-furan derivatives.