Reduction of oxydivaleronitrile

Claim 1

THE METHOD OF MAKING 5,5''-DIAMINODIAMYL ETHER COMPRISING CHARGING 4,4''-DICHLORO DIBUTYL ETHER, PULVERIZED SODIUM CYANIDE, AND ANHYDROUS METHANOL INTO A BOMB, SHAKING AND HEATING TO ABOUT 150* C. FOR A NUMBER OF HOURS, SEPARATING PRECIPITATED SALT, EVAPORATING THE METHANOL, THEREAFTER THE RESIDUE BEING DISSOLVED IN ETHER, THE SOLUTION FILTERED, THE FILTRATE WASHED, THE ETHER REMOVED, THE 4-METHOXY-4'' CYANOBUTYL ETHER DISTILLED OFF UNDER VACUUM, THE UNDISTIALLED MATERIAL, WHICH IS OXYDIVALERONITRILE, BEING DISSOLVED IN ABSOLUTE ETHANOL, BOILED WITH SODIUM, THE ETHANOL DISTILLED OFF, THE RESIDUE ACIDIFIED WITH HYDROCHLORIC ACID, EVAPORATED TO DRYNESS, EXTRACTED WITH ANHYDROUS ETHANOL, THE DIAMINE HYDROCHLORIDE PRECIPITATED WITH ETHER AS A CRYSTALLINE SOLID, THE DIHYDROCHLORIDE THEN MIXED WITH AQUEOUS POTASSIUM HYDROXIDE AND EXTRACTED WITH ETHER, AND THE ETHER EVAPORATED TO RECOVER FREE 5,5''-DIAMINODIAMYL ETHER.