Syntheses from 4,5-dibromo-2-furaldehyde

Abstract

1. The nitration of 4,5-dibromo-2-furaldehyde with nitric acid in acetic anhydride goes with the replacement of the bromine atom in the α-position of the furan nucleus by a nitro group, and 4-bromo-5-nitro-2-furanmethanediol diacetate is formed. 2. In the reaction of butyllithium with 4,5-dibromo-2-furaldehyde acetal the bromide in the α-position of the furan nucleus is replaced by lithium. 3. It was shown that from 4,5-dibromo-2-furaldehyde it is possible to prepare some new difficultly accessible furan compounds with three substituants in the nucleus.