Orgo 1 ch 10 Internal alkynes to alkenes mechanism

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Last updated 8:53 AM on 4/25/26
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4 Terms

1
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Alkyne → trans alkene (partial reduction) reagents:

Na, Li + NH3(liq) (anti -addition)

<p>Na, Li + NH3(liq) (anti -addition) </p>
2
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Lindlar’s Catalyst ( alkyne → cis alkene partial rxn) reagent:

H2 + Pd/CaCo3 or Pb(OAc) (syn - addition)

<p>H2 + Pd/CaCo3 or Pb(OAc) (syn - addition)</p>
3
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Full reduction of Alkyne → Alkene reagents

H2 + Pt, Pd, or Ni

<p>H2 + Pt, Pd, or Ni</p>
4
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Radical HBr addition Alkynes

1st step: HBr + ROOR, light, heat, 2nd step: excess HBr

<p>1st step: HBr + ROOR, light, heat, 2nd step: excess HBr</p>