CHO KOH/ EtOH CHO +ch3 cho O2N O2N 10% NaOH 2 HcHO+Chr coch RT Ph90-94% Naoh/h2o 42 reflux KOH/H,OO O O O NaOH/H2O reflux O 42% O2 N CHO + CH3 CHO O2 N CHO KOH/EtOH 2 PhCHO + CH3 COCH3 10% NaOH R.T. Ph Ph O 90-94% O O KOH/H2 O O