Vikas TU
Last Activity: 11 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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