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    cutiepie117's Avatar
    cutiepie117 Posts: 1, Reputation: 1
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    #1

    Jun 2, 2012, 09:51 PM
    Heck Reaction
    Hello,

    I have an exam tomorrow and I came across this question: Why are cis, trans and geminal isomers formed in some Heck reaction.

    If anyone could help, I will be very thankful.

    :)
    kenny514's Avatar
    kenny514 Posts: 6, Reputation: 1
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    #2

    Jun 19, 2012, 02:35 AM
    Quote Originally Posted by cutiepie117 View Post
    Hello,

    I have an exam tomorrow and I came across this question: Why are cis, trans and geminal isomers formed in some Heck reaction.

    If anyone could help, I will be very thankful.

    :)
    It depends on group. Big group is obstacle for others. Trans is always more common. If use selective catalysis you can get high selective product
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