Ketal

Explain: a. alpha -Halocarbonyl compounds, even the 3^(@) types like , do not undergo SN^(1) reaction. b. Which is more reactive: (i) PrCI or (ii) MeCOCH_(2)CI with NaI/acetone ? c. Acetals and ketals are regenerated back to carbonyl. compounds with H_(3)O^(o+) but not with overset(Θ)(OH) . d. Cyclohexane is more reactive than cyclopenatone with HCN.