Hydrodehalogenation of bromo- and chloropyridines over palladium complex and palladium metal catalysts

Journal Article · Fri Feb 28 23:00:00 EST 1986 · Chem. Heterocycl. Compd. (Engl. Transl.); (United States)

OSTI ID:6033901

Gurovets, A S; Sharf, V Z; Belen'kii, L I

The hydrodehalogenation of 2-chloro-, 2-bromo-, 3-bromo, and 3,5-dibromopyridine has been studied in the presence of a palladium complex catalyst immobilized on silica gel, and a Pd/C catalyst. Cleavage of bromine from bromopyridines over the Pd complex is significantly faster than from the bromo-substituted furanes and thiophenes previously studied. Debromination over Pd/C is faster than over the complex catalyst. Over both catalysts 3-bromopyridine debrominates faster than the 2-isomer. When molecular deuterium is used, the respective deuterated pyridines can be obtained.

• Research Organization: N.D. Zelinskii Institute of Organic Chemistry, Moscow, USSR
• OSTI ID: 6033901
• Journal Information: Chem. Heterocycl. Compd. (Engl. Transl.); (United States), Journal Name: Chem. Heterocycl. Compd. (Engl. Transl.); (United States) Vol. 21:9; ISSN CHCCA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ACTIVATION ENERGY
ADSORBENTS
AZINES
CATALYSIS
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
CHROMATOGRAPHY
COMPLEXES
DEHALOGENATION
DEUTERATION
DEUTERIUM COMPOUNDS
ELEMENTS
ENERGY
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
HETEROGENEOUS CATALYSIS
HYDROGEN COMPOUNDS
HYDROGENATION
KINETICS
METALS
ORGANIC BROMINE COMPOUNDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PALLADIUM
PALLADIUM CHLORIDES
PALLADIUM COMPLEXES
PALLADIUM COMPOUNDS
PLATINUM METALS
PYRIDINES
REACTION KINETICS
SEPARATION PROCESSES
SILICA GEL
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS