Synthesis of amino acids

Claim 1

IN MAKING LYSINE BY HEATING 1 MOLE OF VINYL ALLYL ETHER AT A TEMPERATURE OF ABOUT 150*-300* C., CONTINUING THE HEATING AT THE SAID TEMPERATURE UNTIL ALLYLACETALDEHYDE IS PRODUCED, HYDROBROMINATING THE RESULTING ALLYLACETALDEHYDE CH2=CH-CH2-CH2-CHO TO FORM A SATURATED BROMOALDEHYDE, MIXING THE SAID BROMODEHYDE WITH AT LEAST A STOICHIOMETRIC PROPORTION OF HYDROGEN CYANIDE TO GIVE A BROMOCYANOHYDRIN, MIXING THEREWITH AT LEAST STOICHIOMETRIC PROPORTIONS OF AMMONIUM AND CARBONATE IONS, MAINTAINING CONTACT OF THE BROMOCYANOHYDRIN WITH THE SAID IONS UNTIL THE BROMOCYANOHYDRIN IS CHANGED TO THE CORRESPONDING BROMOHYDANTOIN, MIXING THE BROMOHYDANTOIN WITH AT LEAST THE STOICHIOMETRIC PROPORTION OF AMMONIA UNTIL THE BROMINE OF THE BROMOHYDANTOIN IS REPLACED BY THE AMINO GROUP NH2, AND HEATING THE RESULTING AMINOHYDANTOIN IN CONTACT WITH WATER TO CAUSE BYDROLYSIS OF THE AMINOHYDANTOIN TO LYSINE, THE IMPROVEMENT WHICH COMPRISES EFFECTING THE SAID HYDROBROMINATION BY REACTING THE ALLYLACETALDEHYDE WITH AT LEAST APPROXIMATELY THE STOICHIOMETRIC PROPORTION OF HYDROGEN BROMIDE IN CONTACT WITH AN OXIDIZING AGENT SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND ORGANIC PEROXY COMPOUNDS UNTIL THE COMBINATION BETWEEN THE UNSATURATED ALDEHYDE AND THE HYDROGEN BROMIDE IS SUBSTANTIALLY COMPLETE, THE HYDROBROMINATION UNDER THESE CONDITIONS CAUSING THE BROMINE TO BECOME ATTACHED TO THE TERMINAL CARBON ATOM ORIGINALLY JOINED TO TWO HYDROGENS AND THE HYDROGEN OF THE HYDROGEN BROMIDE TO BECOME ATTACHED TO THE CARBON ATOM ADJACENT TO THE SAID TERMINAL CARBON ATOM, TO GIVE 5-BROMOVALERALDEHYDE.