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Defining the Qualities of High-Quality Palladium on Carbon Catalysts for Hydrogenolysis.

ABSTRACT: Palladium-catalyzed hydrogenolysis is often the final step in challenging natural product total syntheses and a key step in industrial processes producing fine chemicals. Here, we demonstrate that there is wide variability in the efficiency of commercial sources of palladium on carbon (Pd/C) resulting in significant differences in selectivity, reaction times, and yields. We identified the physicochemical properties of efficient catalysts for hydrogenolysis: (1) small Pd/PdO particle size (2) homogeneous distribution of Pd/PdO on the carbon support, and (3) palladium oxidation state are good predictors of catalytic efficiency. Now chemists can identify and predict a catalyst's efficiency prior to the use of valuable synthetic material and time.

SUBMITTER: Crawford CJ

PROVIDER: S-EPMC8291771 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature

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Defining the Qualities of High-Quality Palladium on Carbon Catalysts for Hydrogenolysis.

Crawford Conor J CJ Qiao Yan Y Liu Yequn Y Huang Dongmei D Yan Wenjun W Seeberger Peter H PH Oscarson Stefan S Chen Shuai S

Organic process research & development 20210623 7

Palladium-catalyzed hydrogenolysis is often the final step in challenging natural product total syntheses and a key step in industrial processes producing fine chemicals. Here, we demonstrate that there is wide variability in the efficiency of commercial sources of palladium on carbon (Pd/C) resulting in significant differences in selectivity, reaction times, and yields. We identified the physicochemical properties of efficient catalysts for hydrogenolysis: (1) small Pd/PdO particle size (2) hom ...[more]

PMID: 34305386

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