What is Lindlars catalyst?

1 Answer
Milan S#
Dec 6, 2017

Pd on # CaCO_3# or #BaSO_4 + Pb(CH_3COO)_2 + #quinoline #rArrcolor(blue)"Lindlar catalyst"#.

  • Lindlar catalyst is used for controlled partial hydrogenation of
    alkene. It is used to prepare cis alkene from an alkyne and #H_2#.

  • #rArr#A less active Pd catalyst is used where Pd is adsorbed onto #CaCO_3# or #BaSO_4# { Pd is poisoned} with added lead acetate and quinoline.

  • With Lindlar catalyst, 1 mole of #H_2#, adds to an alkene and cis
    alkene product is unreactive to further reduction.

chempal

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