Question
Which of the following compounds will undergo self aldol condensation in the presence of cold dilute alkali?
BITSAT
Chemistry
Aldehydes and Ketones
2024
BITSAT 2024 (Memory Based Paper 3)
BITSAT Chemistry Question (2024) — Solution
Options
- A. CH _2= CH - CHO
- B. CH C - CHO
- C. C _6 H _5 CHO
- D. CH _3 CH _2 CHO
Answer
D. CH _3 CH _2 CHO
Step-by-step solution
Aldehydes which contain -hydrogen on a saturated carbon, i.e. CH _3 CH _2 CHO will undergo aldol condensation. Although CH _2= C H - CHO also contain a -hydrogen atom but cannot be easily abstracted by a base to form a carbanion and hence does not undergo aldol condensation.
Related: Chemistry — Aldehydes and Ketones · All PYQ Banks