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2 moles of acetaldehyde are warmed in the presence of 10% Ba(OH)2 to give a product which dehydrates to a compound ‘X’. The compound on reduction with NaBH4 will give a)CH3CH=CHCHO b)CH3CH=CHCH2OH choose and explain please

2 moles of acetaldehyde are warmed in the presence of 10% Ba(OH)2 to give a product which dehydrates to a compound ‘X’. The compound on reduction with NaBH4 will give


a)CH3CH=CHCHO


b)CH3CH=CHCH2OH


choose and explain please

Grade:12

1 Answers

Vikas TU
14149 Points
10 years ago

In the presence of Ba(OH)2 acetaldehyde will goes aldol condensation reaction with dehydration i.e leaving a water molecule. Thus the product then after react with NaBH4 will be reduced to CH3CH=CHCH2OH.

Remember NaBH4 reduces only Aldehydes, ketone and acid halide.

Thus product formed after reaction with Ba(OH)2 contains an aldehyde grp and thus, it will undergoes resuction to alcohol.

The reaction is as follows:

 

 

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