JEE Advanced2013ChemistryAldehydes and KetonesActual
After completion of the reactions (I and II), the organic compound(s) in the reaction mixtures is(are):
Options
- AReaction I: P and Reaction II: P
- BReaction I: U, acetone and Reaction II: Q, acetone
- CReaction I: T, U, acetone and Reaction II: P
- DReaction I: R, acetone and Reaction II: S, acetone
Correct answer
C. Reaction I: T, U, acetone and Reaction II: P
Step-by-step solution
Reaction I is the haloform reaction. It is a chemical reaction where haloforms ( CH 3 X ) are produced by the complete halogenation of acetone in the presence of a base. In basic medium, a complete haloform reaction takes place, since the rate of the reaction increases with each α - halogenation. When acetone is reacted with bromine in acetic acid, the bromination of ketone occurs. The first step is the protonation of the carbonyl group and the formation of the enol form. The next step is the attack of enol on