NEETChemistryCarboxylic Acid Derivatives
Match the column ( array |l|l|l|l| & Column-I (Transformations) & & Column-II (Reagents) (a) & Allyl alcohol to propenal & (p) & K ₂ Cr ₂ O ₇ / H ^ (b) & Ethane nitrile to ethanal & (q) & O ₃ / H ₂ O - Zn dust (c) & 1-hexanol to hexanoic acid & (r) & PCC (d) & 2-Butene to ethanal & (s) & DIBAL-H array )
Options
- A(a=p, b=s, c=r, d=q )
- B( a = r , b = p , c = s , d = q )
- C( a = r , b = s , c = p , d = q )
- D( a = s , b = p , c = q , d = r )
Correct answer
C. ( a = r , b = s , c = p , d = q )
Step-by-step solution
- (a) Allyl alcohol ( ) propenal ( ( r ) ) PCC PCC oxidizes a (1^ ) alcohol to an aldehyde without over-oxidation. - (b) Ethanenitrile ( ) ethanal ( ) (s) DIBAL-H DIBAL-H partially reduces nitriles to aldehydes. - (c) 1-Hexanol ( ) hexanoic acid ( ) (p) ( K ₂ Cr ₂ O ₇ / H ⁺ ) Strong oxidation of a (1^ ) alcohol to a carboxylic acid. - (d) 2-Butene ( ) ethanal ( ) (q) ( O ₃ / H ₂ O - Zn ) (ozonolysis) Reductive workup gives aldehydes.