Process for making vitamin E using hydrogen-tris(oxalato) phosphate
AssigneeRoche Vitamins Inc.
InventorsWerner Bonrath, Thomas Netscher, Ulrich Wietelmann
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Abstract
A process for the manufacture of (all-rac)-α-tocopherol by the catalyzed reaction of trimethylhydroquinone with isophytol or phytol is characterized by carrying out the reaction in the presence of hydrogen tris(oxalato)phosphate, or an adduct thereof with a solvent, as the catalyst in an organic solvent. The product of the process is the most active and industrially most important member of the vitamin E group.
Claims22
A process for making (all-rac)-α-tocopherol comprising contacting a reaction mixture comprising trimethylhydroquinone and isophytol or phytol with a catalyst comprising hydrogen tris(oxalato)phosphate and an organic solvent for the reaction mixture.
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