Question

How will you convert ethanal into the following compounds?
(i) Butane-1,3-diol
(ii) But-2-enal
(iii) But-2-enoic acid​

Answer 1

Answer:

Explanation:

(i) Ethanal into  Butane-1,3-diol

Aldol condensation (in presence of dil NaOH) followed by reduction with sodium borohydride.

(ii) Ethanal into But-2-enal

Aldol condensation (in presence of dil NaOH) followed by dehydration.

(iii) Ethanal into But-2-enoic acid

Aldol condensation (in presence of dil NaOH) followed by dehydration and oxidation with Tollen's reagent.

Answer 2

Answer:

(i) Ethanal into Butane-1,3-diol Aldol condensation (in presence of dil NaOH) followed by reduction with sodium borohydride.

(ii) Ethanal into But-2-enal Aldol condensation (in presence of dil NaOH) followed by dehydration.

(iii) Ethanal into But-2-enoic acid Aldol condensation (in presence of dil NaOH) followed by dehydration and oxidation with Tollen's reagent.

Explanation:

I hope it helps!