Which of the following reaction(s) are correctly matched with their major product?

Question

TestHub · Accepted Answer

Question Explanation: Identify which of the provided chemical reactions are correctly paired with their major organic products.

Concept:

This is based on Lactone reduction, Haloform reaction,

Pyrazole synthesis and Bredt's rule.

Solution:

(1) LiAlH₄ reduces lactones to diols.

(2) CH₃CHO undergoes the haloform reaction to give HCOONa and CHBr₃.

(3) 1,3-diketones react with hydrazine to form substituted pyrazoles.

(4) Decarboxylation of the bridged carboxylic acid is forbidden as it would create a bridgehead double bond, violating Bredt's Rule.

Chemistry - Carbonyl compounds Question with Solution | TestHub