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Lindlar catalyst information


A Lindlar catalyst is a heterogeneous catalyst consisting of palladium deposited on calcium carbonate or barium sulfate then poisoned with various forms of lead or sulfur. It is used for the hydrogenation of alkynes to alkenes (i.e. without further reduction into alkanes). It is named after its inventor Herbert Lindlar.

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Lindlar catalyst

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A Lindlar catalyst is a heterogeneous catalyst consisting of palladium deposited on calcium carbonate or barium sulfate then poisoned with various forms...

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Herbert Lindlar

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particular through the development of his catalyst for hydrogenation, as the Lindlar catalyst bears his name. Lindlar was born in Sheffield, England in March...

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Catalyst poisoning

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poisoning may be helpful when it results in improved catalyst selectivity (e.g. Lindlar's catalyst). An important historic example was the poisoning of...

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Catalysis

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palladium (Pd) catalyst partly "poisoned" with lead(II) acetate (Pb(CH3CO2)2) can be used(Lindlar catalyst). Without the deactivation of the catalyst, the alkene...

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Hydrogenation

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using Lindlar's catalyst. For example, when the catalyst palladium is placed on barium sulfate and then treated with quinoline, the resulting catalyst reduces...

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Alkyne

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hydrogenated in the presence of a palladium/silver catalyst). For more complex alkynes, the Lindlar catalyst is widely recommended to avoid formation of the...

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Reducing agent

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lithium aluminum hydride Hydrogen without or with a suitable catalyst; e.g. a Lindlar catalyst Sodium amalgam (Na(Hg)) Sodium-lead alloy (Na + Pb) Zinc amalgam...

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Palladium

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petroleum cracking. Palladium is also essential to the Lindlar catalyst, also called Lindlar's Palladium. A large number of carbon–carbon bonding reactions...

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List of organic reactions

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Haloform reaction Liebeskind–Srogl coupling Liebig melamine synthesis Lindlar catalyst Lobry de Bruyn–Van Ekenstein transformation Lombardo methylenation...

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Palladium on carbon

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Often the catalyst mixture is stored moist. Palladium black Platinum on carbon Platinum dioxide Rhodium-platinum oxide Lindlar catalyst Raney nickel...

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Karl Wilhelm Rosenmund

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acid chlorides to aldehydes over palladium on barium sulfate as catalyst (Lindlar catalyst). The Rosenmund–von Braun reaction, the conversion of an aryl...

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List of inorganic compounds named after people

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Lazier catalyst (Cu2Cr2O5) Lemieux-Johnson reagent (NaIO4 / OsO4) Lewisite (ClCH=CHAsCl2) Ley-Griffith reagent (RuO4N(C3H7)4) Lindlar catalyst (Pd / CaCO3...

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Rosenmund reduction

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room temperatures. Lindlar catalyst - Palladium on calcium carbonate with added catalytic poison, similar to the Rosenmund catalyst Grundmann aldehyde...

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Alkyne metathesis

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new triple bond is stereoselectively reduced with hydrogen and the Lindlar catalyst in order to obtain the Z-alkene (cyclic E-alkenes are available through...

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Phenylacetylene

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expected of that functional group. It undergoes semihydrogenation over Lindlar catalyst to give styrene. In the presence of base and copper(II) salts, it undergoes...

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Urushibara nickel

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estradiol. Nickel boride catalyst Nickel(II) oxide Cobalt boride Lindlar catalyst Adams's catalyst Molybdenum disulfide Urushibara, Yoshiyuki; Nishimura, Shigeo...

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Strychnine total synthesis

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alkyne 24. This compound was reduced to the allyl alcohol 25 using the Lindlar catalyst and lithium aluminium hydride removed the remaining amide group in...

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Latamoxef

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phenylacetylamide; the triple bond is partially reduced with a 5% Pd-CaCO3 (Lindlar catalyst) and then epoxidized with mCPBA to give 4. The epoxide is opened at...

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Alkene

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cis-alkene is desired, hydrogenation in the presence of Lindlar's catalyst (a heterogeneous catalyst that consists of palladium deposited on calcium carbonate...

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Cyclooctadecanonaene

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tert-butanol and was concluded with hydrogen organic reduction with Lindlar catalyst. Superbenzene Gorter, S.; Rutten-Keulemans, E.; Krever, M.; Romers...

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Protectin D1

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the methyl ester. In addition, the diol is hydrogenated using the Lindlar catalyst, with 1-octene added as a sacrificial olefin, to produce a highly stereoselective...

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Endiandric acid C

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(as shown); they began with "mild hydrogenation" in the presence of Lindlar catalyst and quinoline, anticipating tetraene diol 15, cyclooctatriene 16, or...

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Kuwajima Taxol total synthesis

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in a nucleophilic addition with n-butyllithium to alcohol 1.3. The Lindlar catalyst then reduced the alkyne to the alkene in 1.4 and Swern oxidation converted...

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