Patent ID: 6509504
Filing Date: 2003-01-21
Classification: C07C

Abstract:
A method for preparing serinol through hydrogenation, comprising the steps of:reacting 1 equivalent of nitromethane with 1 to 10 equivalents of para-formaldehyde and then, adding 0.5 to 5 equivalents of sodium hydroxide to give 2-nitro-1,3-propanediol sodium salt; preparing a catalyst which comprises an inorganic support in which a catalytically effective metal component is impregnated at an amount of 1 to 20 wt %, said catalytically effective metal being selected from the group consisting of palladium (Pd), platinum (Pt), rhodium (Rh), iridium (Ir), ruthenium (Ru), osmium (Os) and mixtures thereof; and continuously hydrogenating the 2-nitro-1,3-propanediol sodium salt in an immobilized bed reactor in which the catalyst is packed.