' 
' is the product which is obtained from propanenitrile and stannous chloride in the presence of hydrochloric acid followed by hydrolysis. ' 
' is the product which is obtained from the but-2-ene by the ozonolysis followed by hydrolysis. From the following, which product is not obtained when one mole of ' 
' and one mole of ' 
' react with each other in the presence of alkali followed by heating?
Text Solution
Verified by ExpertsD
Product 
is obtained by the Stephen reduction of propanenitrile ( 
).
(Propanal).
Product 
is obtained by the reductive ozonolysis of but-2-ene ( 
).
(Ethanal).
When propanal ( 
) and ethanal ( 
) react in the presence of alkali followed by heating, they undergo cross-aldol condensation.
Possible products are:
Self-aldol of propanal: 
(2- Methylpent-2enal).
Self-aldol of ethanal: 
(But-2-enal).
Cross-aldol (Ethanal as nucleophile): 
(Pent-2-enal).
Cross-aldol (Propanal as nucleophile): 
(2-Methylbut-2-enal).
Comparing with the options, 3-Methylbut-2-enal is not formed in any of these reactions.
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