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Hydrogenation of Aromatic Compounds

Hydrogenation of Aromatic Compounds: Introduction

Reaction principle

Compared to the hydrogenation of alkenes and alkynes, the catalytic hydrogenation of aromatic compounds succeeds only under harsh conditions because the aromatic conjugation has to be broken in the first step. Subsequent hydrogenation to fully saturated cycloalkanes is fast. Preferred catalysts for the hydrogenation are platinum, palladium, rhenium and Raney nickel.

Examples:

Fig.1
Fig.2

Industrial application

  • Preparation of cyclohexane
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