can you guys check if i'm on the right track and if i'm missing something... the order, the first is the most acidic compound.
#4 the most acidic because it has 3 more electronegative than oxygen atoms delocalizing the positive charge. no acidic protons
#1 the most resonance structures can be drawn from the ring and the carbonyl oxygen. acidic protons on the ring
#3 negative charge on carbonyl oxygen. acidic proton on the methyl.
#2 negative charge on carbonyl oxygen. acidic proton on methyl and the t-butyl group electron withdrawing?
#5 negative charges on the carbonyl oxygen and positive on the ether oxygens destabilized. no acidic protons