ईथेनल को निम्न यौगिकों में कैसे परिवर्तित करोगे?
(i) ब्यूटेन-1, 3-डाइऑल (ii) ब्यूट-2-ईनल
(iii) ब्यूट-2-ईनोइक अम्ल

Explanation

(i) `2CH_(3)CHOunderset("(Aldol condensation)")overset("Dil.NaOH")tounderset("3-hydroxybutanal")(CH_(3)overset(OH)overset(|)(CH)-CH_(2)CHO)`
`underset("(Reduction)")overset(NaBH_(4))tounderset("Butane-1,3-diol")(CH_(3)-overset(OH)overset(|)(CH)-CH_(2)-CH_(2)-OH)`
`underset("Ethanal")(2CH_(3)CHO)underset("Aldol condensation)")overset("Dil.NaOH")tounderset("3-hydroxybutanal")(CH_(3)-overset(OH)overset(|)(CH)-CH_(2)CHO)`
`underset(-H_(2)O)overset(H_(3)O^(+)//Delta)tounderset("But-2-enal")(CH_(3)-CH=CHcdotCHO)`
(iii) `underset("Ethanal")(2CH_(3)CHO)underset("(As shown above")overset((ii)H_(3)O^(+)//Delta)tounderset("But-2-enal")(CH_(3)-CH=CHcdotCHO)`
`overset("Tollen's reagent")tounderset("But-2-enoic acid")(CH_(3)-CH=CH-COOH)`