Patent ID: 7022842

Claim:
A method for synthesizing a β-lactam comprising reacting a β-amino acid in water in a reaction vessel at high-temperature and under high-pressure conditions for a reaction time of 0.001 seconds to 10 minutes to synthesize the β-lactam; wherein the temperature range is 200 ° C. or higher; wherein the pressure range is 10 MPa or higher; wherein β-lactam is expressed by the formula: wherein R 1 , R 2 , R 3 , R 4 and R5 may be the same or different groups, and respectively indicate hydrogen, halogen, alkyl groups, phenyl groups, phenylalkyl groups, aryl groups, cycloalkyl groups, atkenyl groups, or arylalkyl groups with 1 to 15 carbon atoms, which may be unsubstituted or substituted by substituent groups; and wherein the substituent groups are halogen atoms, amido groups, nitro groups, alkoxy groups, acetoxy groups, hydroxyl groups, mercapto groups, phosphoric acid groups, tosyl groups, acyl groups, imido groups, phosphine groups, nitrile groups, or alkylsilyl groups.