243A DIRECT AMMONOLYSIS OF AN O-HALO ACID R-CH,CO,H 1X2, P4 RCHCO,H_NHi(excess), RCHCO2 (2)H2O NH+ This method is probably used least often because yields tend to be poor 24.3B FROM POTASSIUM PHTHALIMIDE This method is a modification of the gabriel synthesis of amines the yields are usually high and the products are easily purified24.3A DIRECT AMMONOLYSIS OF AN α-HALO ACID R CH2 CO2H (1) X2, P4 (2) H2O RCHCO2H X NH3 (excess) RCHCO2 - NH3 + This method is probably used least often because yields tend to be poor. 24.3B FROM POTASSIUM PHTHALIMIDE This method is a modification of the Gabriel synthesis of amines. the yields are usually high and the products are easily purified