| abstract |
A process for preparing an amine of the structuren nwhich comprises na. treating an aqueous solution of a keto acid of the structuren nwith ammonium formate, nicotinamide adenine dinucleotide, dithiothreitol and partially purified phenylalanine dehydrogenase and/or formate dehydrogenase enzyme (PDH/FDH); and nb. adjusting pH of the reaction mixture with sodium hydroxide to form the desired amine which is substantially free of undesirable excess ammonium ions. |