NEETChemistryAldehydes and Ketones
Match the carbonyl compounds in List I with their corresponding aldol addition products in List II. List I List II (A) Ethanal (I) 3-Hydroxy-2-methylpentanal (B) Propanone (II) 4-Hydroxy-4-methylpentan-2-one (C) Propanal (III) 2-Ethyl-3-hydroxyhexanal (D) Butanal (IV) 3-Hydroxybutanal Choose the correct answer from the options given below:
Options
- A(A)-(I), (B)-(II), (C)-(III), (D)-(IV)
- B(A)-(IV), (B)-(II), (C)-(I), (D)-(III)
- C(A)-(IV), (B)-(I), (C)-(II), (D)-(III)
- D(A)-(II), (B)-(IV), (C)-(III), (D)-(I)
Correct answer
B. (A)-(IV), (B)-(II), (C)-(I), (D)-(III)
Step-by-step solution
Aldol addition occurs when aldehydes or ketones with -hydrogens are treated with a dilute base. For Ethanal ( CH ₃ CHO ), the self-addition product is 3-hydroxybutanal. For Propanone ( CH ₃ COCH ₃ ), the self-addition product is 4-hydroxy-4-methylpentan-2-one. For Propanal ( CH ₃ CH ₂ CHO ), the -carbon of one molecule attacks the carbonyl carbon of another, forming 3-hydroxy-2-methylpentanal. For Butanal ( CH ₃ CH ₂ CH ₂ CHO ), following the same mechanism, the product is 2-ethyl-3-hydroxyhexanal. Thus, the correc