[EN] PROCESS FOR PREPARING ISOMANNIDE, MONOKETONES AND MIXTURES THEREOF<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ISOMANNIDE, DE MONOCÉTONES ET DE MÉLANGES DE CEUX-CI
申请人:RHODIA OPERATIONS
公开号:WO2018112774A1
公开(公告)日:2018-06-28
The present invention relates to a process for preparing at least one compound chosen in the group consisting of 1, 4: 3, 6-dianhydro-D-mannitol, (3aS, 6S, 6aR) -6-hydroxytetrahydrofuro [3, 2-b] furan-3 (2H) -one, (3aS, 6R, 6aR) -6-hydroxytetrahydrofuro [3, 2-b] furan-3 (2H) -one and mixtures thereof, comprising a reaction of 1, 4; 3, 6-dianhydro-D-threo-2, 5-hexodiulose with hydrogen. The reaction can be advantageously carried out under mild conditions and gives high conversions and selectivities with low commercial production cost.