NOVELTY - Preparation of amino acrylic acid compound (I), involves heating a mixture of amine and D-(-)-pantolactone in the ratio of 1:1.5 to 1:2 in a solvent at a temperature of 110-150 degrees C for period of 16-24 hours followed by raising the temperature of the mixture to 200-230 degrees C for period of 15-25 min to obtain crude reaction mixture; and cooling the crude reaction mixture at 25-30 degrees C followed by purifying by silica gel column chromatography to obtain the compound (I).    USE - In the preparation of amino acrylic acid compounds (claimed) which are used in the treatment malaria, and infections due to Staphylococcus aureus.    ADVANTAGE - The method provides an efficient and rapid synthesis of the compound (I) by reducing the number of steps, following atom economy, and a green synthetic route. The obtained compound exhibits both antibacterial and anti-plasmodium (anti-malarial) activity, in good yield and purity.    DETAILED DESCRIPTION - Preparation of amino acrylic acid compound of formula R5-C(R4)=CH-NH-C(=O)-C(R3)(OH)-C(R1)(R2)-CH2-OH (I), involves heating a mixture of amine and D-(-)-pantolactone in the ratio of 1:1.5 to 1:2 in a solvent at a temperature of 110-150 degrees C for period of 16-24 hours followed by raising the temperature of the mixture to 200-230 degrees C for period of 15-25 min to obtain crude reaction mixture; and cooling the crude reaction mixture at 25-30 degrees C followed by purifying by silica gel column chromatography to obtain the compound (I).    R1 and R2=-1-15C alkyl, 1-15C alkenyl, 1-15C alkynyl, phenyl, aralkyl, or conjugated aromatic group (all optionally substituted with halo, nitro, alkoxy, cyano, hydroxy, amido, or amino groups), H, halo, nitro, alkoxy, cyano, hydroxy, amido or amino;or    R1+R2=cyclic compound (optionally containing 1-4 heteroatoms, where the cyclic compound optionally contains a carbonyl compound);    R3=-1-15C alkyl, 1-15C alkenyl, 1-15C alkynyl, phenyl, aralkyl, or conjugated aromatic group (all optionally substituted with halo, nitro, alkoxy, cyano, hydroxy, amido, or amino groups) or H;    R4 and R5=-1-15C alkyl, 1-15C alkenyl, 1-15C alkynyl, phenyl, aralkyl, or conjugated aromatic group (all optionally substituted with halo, nitro, alkoxy, cyano, hydroxy, amido or amino groups), H or COOR;or    R4+R5=cyclic compound (optionally containing 1-4 heteroatoms, and optionally the cyclic compound contains a carbonyl compound);    R=-1-15C alkyl, 1-15C alkenyl, 1-15C alkynyl, phenyl, or aralkyl (all optionally substituted with halo, nitro, alkoxy, cyano, hydroxy, amido or amino groups).    An INDEPENDENT CLAIM is included for preparing (E)-3-((S)-2,4-dihydroxy-3,3-dimethyl-butyrylamino)-acrylic acid, involving heating a mixture of (1Sasterisk,2Sasterisk,3Rasterisk,4Rasterisk)-allyl 3-aminobicydo(2.2.1)hept-5-ene-2-carboxylate and (1R,2R,3S,4S)-allyl-3-((R)-2,4-dihydroxy-3,3-dimethylbutanamido)bicycle(2.2.1)hept-5-ene-2-carboxylate in the ratio of 1:1.5 to 1:2 in a solvent at 110-150 degrees C for period of 16-24 hours followed by raising the temperature to 200-230 degrees C for period of 15-25 minutes to obtain crude reaction mixture, cooling the crude reaction mixture at 25-30 degrees C followed by purifying by silica gel column chromatography to yield (R,Z)-allyl 3-(2,4-dihydroxy-3,3-dimethylbutanamido)acrylate (G1); and deallylating the solution (G1) by known method in the presence of catalyst such as in a solvent to obtain (E)-3-((S)-2,4-dihydroxy-3,3-dimethyl-butyrylamino)-acrylic acid.