On the Molecular Form of D-Xylo-5-hexulosonate in Aqueous Solutions

陳, 朝洋; 山本, 晴彦; 管, 孝男

doi:10.1248/cpb.18.815

Cited by 3 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The other two 5‐KAs also prefer a five‐membered ring conformation (>99 % for 5‐keto‐ d ‐mannonic acid and 80–89 % for 5‐keto‐ d ‐gluconic acid). The remainder is in the open chain or lactone form. The effect of the ring conformation on reactivity has been observed before for the conversion of glucose and fructose to HMF.…”

Section: Resultsmentioning

confidence: 54%

Synthesis of Furandicarboxylic Acid Esters From Nonfood Feedstocks Without Concomitant Levulinic Acid Formation

Klis

Haveren

et al. 2017

ChemSusChem

View full text Add to dashboard Cite

Abstract5‐Hydroxymethylfurfural (HMF) is a versatile intermediate in biomass conversion pathways. However, the notoriously unstable nature of HMF imposes challenges to design selective routes to chemicals such as furan‐2,5‐dicarboxylic acid (FDCA). Here, a new strategy for obtaining furans is presented, bypassing the formation of the unstable HMF. Instead of starting with glucose/fructose and thus forming HMF as an intermediate, the new route starts from uronic acids, which are abundantly present in many agro residues such as sugar beet pulp, potato pulp, and citrus peels. Conversion of uronic acids, via ketoaldonic acids, to the intermediate formylfuroic acid (FFA) esters, and subsequently to FDCA esters, proceeds without formation of levulinic acid or insoluble humins. This new route provides an attractive strategy to valorize agricultural waste streams and a route to furanic building blocks without the co‐production of levulinic acid or humins.

show abstract

Section: Resultsmentioning

confidence: 54%