Homogeneous catalytic hydrogenation: regiospecific reductions of model coal compounds containing a nitrogen heterocyclic ring. [Benzoquinolines, phenanthridine, benzoquinolines]
A research program was established to find transition-metal catalysts that will regioselectively reduce the heterocyclic ring in polynuclear heteroaromatic nitrogen compounds. Some of the findings are: (1) quinoline, acridine, benzoquinolines and phenanthridine which are found in coal and coal liquids, can be selectively reduced under various homogeneous hydrogenation conditions, i.e., water gas shift (wgs), synthesis gas (sg) and hydrogerc alone using transition metal hydrides as catalysts; (2) Wilkinson's catalyst, ((C/sub 6/H/sub 5/)/sub 3/P)/sub 3/ RhCl can selectively reduce quinoline, 5,6- and 7,8-benzoquinoline, acridine and phenanthridine under mild conditions in nearly quantitative yields; (3) 9,10-dihydrophenanthridine can act as a hydrogen donor only in the presence of rhodium and ruthenium catalysts.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 5544859
- Report Number(s):
- LBL-15936; CONF-830807-13; ON: DE84001079
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010403 -- Coal & Coal Products-- Hydrogenation-- (-1987)
010405* -- Coal
Lignite
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ACRIDINES
AZINES
CARBONYLS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTIONS
COAL LIQUIDS
COBALT COMPLEXES
COMPLEXES
FLUIDS
HETEROCYCLIC COMPOUNDS
HYDRIDES
HYDROGEN COMPOUNDS
HYDROGENATION
ION EXCHANGE MATERIALS
IRON COMPLEXES
LIQUIDS
MANGANESE COMPLEXES
MATERIALS
ORGANIC COMPOUNDS
ORGANIC ION EXCHANGERS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
POLYMERS
POLYOLEFINS
POLYSTYRENE-DVB
PYRIDINES
QUINOLINES
RHODIUM COMPLEXES
RUTHENIUM COMPLEXES
STRUCTURAL MODELS
TRANSITION ELEMENT COMPLEXES