1.

Write the crossed aldol condensation.

Answer»

SOLUTION :Aldol condensation can also takes place between two different aldehydes or ketones or between one aldehydes and one KETONE such an aldol condensation is called crossed or mixed aldol condensation. This reaction is not very useful as the product is usually a mixture of all possible condensation products and cannot be SEPARATED EASILY.
`underset("formaldehyde")(HCHO)+underset("acetaldehyde")(CH_(3)CHO)overset(dil,NaOH)tounderset("3-hydroxy propanol")(HO-CH_(2)-CH_(2)-CHO)`
`underset("formaldehyde")(HCHO)+underset("acetone")(CH_(3)-underset(O)underset(||)(C)-CH_(3))overset(dil,NaOH)tounderset("4-hydroxy butan-2-one")(HO-CH_(2)-CH_(2)-underset(O)underset(||)(C)-CH_(3))`


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