question_answer

In the following reaction sequence: Product X and F are given as:  and Select the INCORRECT statement.

A) In Reaction-1 product (Y) is obtained

B) In Reaction-2 both products (X) and (Y) are obtained.

C) Cross aldol reaction using strong bulky base in non-protic solvent gives single cross aldol product via kinetic enolate. Thus it is regioselective and is called directed aldol.

D) Cross aldol reaction using a weak base in protic solvent produces a mixture via both kinetic and thermodynamic enolate and is called classical aldol

Correct Answer: A

Solution :

[a]

Directed aldol reaction: Crossed aldol reaction using strong bulky base in non-protic solvent (LDA/ THF) that produces a single crossed aldol product via kinetic enolate.	Classic aldol reaction: Crossed aldol reaction using a weak base in protic solvent that produces a mixture via both kinetic and thermodynamic enolates.

Statement (1) is INCORRECT- CORRECT:- Product (X) is obtained