Convenient hydrogenation of furfural to furfuryl alcohol in metal-catalyzed and organo-catalyzed environments

Asanda C. Matsheku, Munaka Christopher Maumela, Banothile C.E. Makhubela

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Palladium iminophosphorane (C1-C3) and pyridylimine (C4-C5) pincer complexes were evaluated for their activity in the conversion of furfural to furfuryl alcohol in the presence of triethylamine (Et3N) and formic acid (FA). A catalyst loading of 0.1 mol% Pd afforded conversions of >99% achieving TONs of up to 9996. Surprisingly, upon evaluating a control blank (no metal catalyst) the conversions remained at >99% under metal catalyst-free conditions. Various tertiary and secondary amines were also screened in place of Et3N and all proved efficient in furfural hydrogenation to furfural alcohol giving comparable conversions (>99%). Apart from furfural, metal catalyst-free hydrogenation was expanded to various other aldehydes all of which were converted to their corresponding alcohols in excellent yields of up to 100%. This work has led to a new discovery that would result in cost-effective metal catalyst-free processes for aldehyde hydrogenation.

Original languageEnglish
Pages (from-to)1471-1483
Number of pages13
JournalRSC Sustainability
Volume1
Issue number6
DOIs
Publication statusPublished - 17 Jul 2023

ASJC Scopus subject areas

  • Chemistry (miscellaneous)
  • Analytical Chemistry
  • Electrochemistry
  • Organic Chemistry

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