Aldehydes and Ketones - Result Question 42
####43. Base catalysed aldol condensation occurs with
(a) propionaldehyde
(b) benzaldehyde
(c) 2-methyl propionaldehyde
(d) 2, 2-dimethyl propionaldehyde
Passage Based Questions
Passage 1
Two aliphatic aldehydes
(2010)
Show Answer
Answer:
Correct Answer: 43. (c)
Solution:
- For base catalysed aldol condensation, there must be at least one
2, 2-dimethyl propionaldehyde (no
Passage 1 (For Q. Nos. 44-46)
The given product is an ester, obtained by condensation of a hydroxy acid obtained through hydrolysis of a cyanohydrin :
Acid above is obtained by acid hydrolysis of cyanohydrin
Passage 2 (For Q. Nos. 47-49)
(gives positive iodoform test)
R
Passage 3 (For Q. Nos. 50-52)
