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Ethanal to but-2-enal...

Ethanal to but-2-enal

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`2CH_(3)-CHO overset(OH^(-))rarr underset("3-hydroxy butanal")(CH_(3)-underset("(Aldol)")overset(OH)overset(|)(CH)-CH_(2)-CHO) underset(-H_(2)O)overset(Delta)rarr CH_(3)-CH=CH-CHO`
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How will you convert ethanal into the following compounds? (i) Butane-1,3-diol (ii) But-2-enal (iii) But-2-enoic acid

Knowledge Check

  • Ethanol and ethanal are distinguished by

    A
    Fehling's solution
    B
    Tollens reagent
    C
    Iodoform test
    D
    Cericammonium nitrate

  • Ethanol and ethanal are separated from their mixture using the reagent

    A
    HCN
    B
    `NaHSO_3`
    C
    `C_6H_5NHNH_2`
    D
    All

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    Write the relavant chemical equations : Ethane to bromoethene

    Give names of the reagents to bring about the following transformations: (i) Pentan-1-ol to pentanal, (ii) Ethannitrile to ethanal, (iii) Allyl alcohol to propenal, (iv) But -2-ene to ethanal and (v) But-1-yne to butanone

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    Ethanal is more reactive towards nucleophilic addition reaction than propanone. Why ?

    Name the reagents used for the following conversions : i) Hexanol - 1 to hexanal ii) ethanenitrile to ethanal (ii) ethanenitrile to ethanal iii) Butene - 2 to ethanal .

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