in these examples were removed during processing to identify them and to monitor the progress of the reactions palladium chloride 0 13 g was reacted in 10 ml alcohol with sodium borohydride 0 05 g 1 3 mmol when hydrogen evolution ceased the alcohol was decanted and the catalyst was washed with 2 u00d7 10 ml portions of alcohol to remove the excess sodium borohydride and recover the heterogeneous palladium hydride catalyst when used in a non isolation process the palladium hydride catalyst can be prepared in situ and can then be recycled for subsequent use sodium pyruvate 60 5 g 0 55 mol was first added to a cold 0 u00b0 c 1n aqueous solution of sodium hydroxide 550 ml benzaldehyde 53 g 0 55 mol was then added at such a rate that the temperature was maintained below 5 u00b0 c the reaction mixture was then aged four hours at 0 u00b0 c with good agitation following the age period the mixture was acidified to ph 1 0 with 6n hcl maintaining a temperature of 0 u00b0 5 u00b0 c after acidification the benzalpyruvic acid product was extracted with 500 ml ethyl acetate yield 75 77 by hplc analysis anal calcd for c 10 h 7 o 3 k c 56 08 h 3 30 k 18 21 found c 56 11 h 3 31 k 18 20 1 h nmr acetone d 6 u03b4 7 2 d 1h 7 8 d 1h 7 5 s 5h ir kbr cm 1 3500sb 3050 2900s 1740s 1695s 1230s 1020s to the.