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Keywords:

  • biomass;
  • cellulose;
  • renewable resources;
  • supported catalysts;
  • synthetic methods

On page 199 of this Communication, a reference and one sentence are missing from the end of the second paragraph of the introduction. References [9] and [10] did appear correctly in the References section. For clarity, the correct paragraph and relevant references are reproduced below:

“In this work, the one-pot conversion of cellulose into isosorbide is studied (Scheme 1). In a first step, cellulose is hydrolyzed to glucose by an acid catalyst. This glucose is hydrogenated to sorbitol over a metal catalyst under hydrogen pressure. Sorbitol is then further dehydrated to isosorbide via sorbitan isomers by the same acid catalyst. We note that only 1,4- and 3,6-sorbitan isomers can be further dehydrated to isosorbide. The 1,5- and 2,5-sorbitan isomers are unable to undergo a second dehydration. Finally, the isosorbide isomers isomannide (1,4:3,6-dianhydromannitol) and isoidide (1,4:3,6-dianhydroiditol) are dehydration products of mannitol and iditol, respectively. Mannitol can be formed through hydrogenation of fructose and mannose by means of the acid-catalyzed Lobry de Bruyn–van Ekenstein transformation of glucose or, like iditol, through the metal-catalyzed isomerization of sorbitol.9 Isomannide and isoidide can also be formed through the metal-catalyzed isomerization of isosorbide.10

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