stirred and heated at reflux temperature 105 4 g 0 55 mole r 2 4 dichloro pea in 50 ml acetonitrile was added drop wise in 45 min time interval solid material was precipitated during this addition the reaction mixture was stirred under reflux for 1 hr and cooled to room temperature the reaction mixture was further stirred at room temperature for 1 hour solid material was filtered washed with acetonitrile and dried similarly different diastereomeric salt of s 2 hydroxy 3 methoxy 3 3 diphenyl propionate was prepared using different chiral amine in different batches and the results are summarized in table 2 given below in a 3 liter three necked flask 100 g chiral amine salt in mixture of 1 760 liter acetonitrile and 440 ml water was taken the reaction mixture was stirred and heated under reflux to obtain a clear solution this clear solution was transferred in 5 liter beaker and stored at u2212 20 u00b0 c for 15 hours solid was filtered washed with acetonitrile and dried ir kbr 3466 cm u2212 1 3055 cm u2212 1 2974 cm u2212 1 2935 cm u2212 1 2875 cm u2212 1 2831 cm u2212 1 2540 cm u2212 1 1637 cm u2212 1 1591 cm u2212 1 1539 cm u2212 1 1479 cm u2212 1 1442 cm u2212 1 1404 cm u2212 1 1352 cm u2212 1 1097 cm u2212 1 1045 cm u2212 1 725 cm u2212 1 696 cm u2212 1 634 cm u2212 1 1115 cm u2212 1 677 cm u2212 1 634 cm u2212 1 546 cm u2212 1 1.