Addition Reaction Alkyne Organic Chemistry

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12 Terms

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Markovnikov Addition

H attaches to least-substituted carbon

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Anti-Markovnikov

H attaches to most-substituted carbon

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Conjugated

Two double bonds are separated by a 1 single bond

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<p>H2 Lindlar’s Cat</p>

H2 Lindlar’s Cat

Stops the reaction at a double bond

<p>Stops the reaction at a double bond</p>
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<p>1.O3 2.Zn</p><p></p>

1.O3 2.Zn

Break up at pi bond. O double bond where bond broke, OH attached to that. Due to Zn, O stays O.

<p>Break up at pi bond. O double bond where bond broke, OH attached to that. Due to Zn, O stays O.</p>
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<p>1.BH3*THF 2.H2O2, NaOH</p>

1.BH3*THF 2.H2O2, NaOH

Double bond with O at end with pi bond

<p>Double bond with O at end with pi bond</p>
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<p>One equivalent HBr</p>

One equivalent HBr

Keep double bond. Add Br and H mark

<p>Keep double bond. Add Br and H mark</p>
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<p>Na NH3</p>

Na NH3

Keep double bond

<p>Keep double bond</p>
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<p>H2 Pt</p>

H2 Pt

Removes pi bonds. Syn addition of 2 Hs.

<p>Removes pi bonds. Syn addition of 2 Hs. </p>
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<p>H2SO4, H2O HgSO4</p>

H2SO4, H2O HgSO4

Add O double bond to where pi bonds were.

<p>Add O double bond to where pi bonds were.</p>
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Thermodynamic Product

Hot temperatures. Add to 1,4

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Kinetic Product

Cold temperatures. Add to 1,2