Page 97 - Pharm.Org.Chem I 05-PC101 (1)
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Stereospecific Addition of Br2 to
                   Isomeric 2-Butene

 A. cis-2-Butene

  B. trans-2-Butene

2) Addition of Hydrogen (Catalytic hydrogenation of alkenes
  or reduction reactions)
   Mechanism: Syn addition

   Ni, Pd or Pt could be used as catalysts for hydrogenation of alkenes to the
   corresponding alkanes.

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