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Aldehyde reaction

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    Hi I'm learning the mechanism for aldehydes to nitriles. I know the process involves adding HCN, but what conditions should be used? I can't seem to find it in my textbooks or online? Is it reflux, and alkaline conditions?
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    There are all sorts of conditions for this kind of reaction, I would definitely check with your exam board which they use (either in the spec/past papers/board backed textbooks).

    Chemguide says KCN/H2SO4 under basic conditions
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    (Original post by EierVonSatan)
    There are all sorts of conditions for this kind of reaction, I would definitely check with your exam board which they use (either in the spec/past papers/board backed textbooks).

    Chemguide says KCN/H2SO4 under basic conditions
    Thank you. I need to work out how to get from one organic compound to another. I'm stuck with an alkene to a ketone. WOuld the sequence go butene, bromobutane, butanol and then butanonone, or is there a shorter sequence? Thank you
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    (Original post by definite_maybe)
    Thank you. I need to work out how to get from one organic compound to another. I'm stuck with an alkene to a ketone. WOuld the sequence go butene, bromobutane, butanol and then butanonone, or is there a shorter sequence? Thank you
    Add H2O across the double bond to make the alcohol, then oxidise
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    (Original post by EierVonSatan)
    Add H2O across the double bond to make the alcohol, then oxidise
    Thank you. I have a few of these that I'm stuck with. Could you just look over them for me? Thanks.

    C2H4 to Propylamine would be C2H4 to bromoethane to propanenitrile to propylamine?

    For CH3CH2CHO to polypropene would it be the aldehyde to propanol to propene and then polymerisation.

    From 1-propanol to 2-propanol, I have no idea. WOuld you go back to propene, and then?

    Thank you for any help.
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    (Original post by definite_maybe)
    C2H4 to Propylamine would be C2H4 to bromoethane to propanenitrile to propylamine?
    Yup

    For CH3CH2CHO to polypropene would it be the aldehyde to propanol to propene and then polymerisation.
    :yep:

    From 1-propanol to 2-propanol, I have no idea. WOuld you go back to propene, and then?
    Yeah, dehydrate then rehydrate
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    (Original post by EierVonSatan)
    Yup



    :yep:



    Yeah, dehydrate then rehydrate
    Thank you again

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