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Hydrogenation of Alkynes with the Lindlar catalyst

Hydrogenation of Alkynes with Lindlar Catalyst: Introduction

Reaction principle

Heterogeneous catalytic hydrogenation of alkynes proceeds via alkenes to alkanes. The reaction can be stopped at the alkene stage if a partially poisoned catalyst is used, for example a Lindlar catalyst (Pd/CaCO3 poisoned with Pb(OAc)2 ). The reaction requires one equivalent of hydrogen.




  • Synthesis of cis alkenes
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