Preconversion catalytic deoxygenation of phenolic functional groups

Technical Report · Tue Jan 01 00:00:00 EST 1991

DOI:https://doi.org/10.2172/6041946· OSTI ID:6041946

Kubiak, C P

The deoxygenation of phenols is a conceptually simple, but unusually difficult chemical transformation to achieve. Aryl carbon-oxygen bond cleavage is a chemical transformation of importance in coal liquefaction and the upgrading of coal liquids as well as in the synthesis of natural products. This proposed research offers the possibility of effecting the selective catalytic deoxygenation of phenolic functional groups using CO. A program of research for the catalytic deoxygenation of phenols, via a low energy mechanistic pathway that is based on the use of the CO/CO{sub 2} couple to remove phenolic oxygen atoms, is underway. We are focusing on systems which have significant promise as catalysts: Ir(triphos)OPh, (Pt(triphos)OPh){sup +} and Rh(triphos)OPh. Our studies of phenol deoxygenation focus on monitoring the reactions for the elementary processes upon which catalytic activity will depend: CO insertion into M-OPh bonds, CO{sub 2} elimination from aryloxy carbonyls {l brace}M-C(O)-O-Ph{r brace}, followed by formation of a coordinated benzyne intermediate.

• Research Organization: Purdue Univ., Lafayette, IN (United States). Dept. of Chemistry
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FG22-89PC89770
• OSTI ID: 6041946
• Report Number(s): DOE/PC/89770-T3; ON: DE92005198
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
IRIDIUM COMPLEXES
CATALYTIC EFFECTS
OXYGEN
REMOVAL
PHOSPHINES
PHOSPHORUS COMPOUNDS
PLATINUM COMPLEXES
RHODIUM COMPLEXES
ACTIVATION ENERGY
CARBON DIOXIDE
CARBON MONOXIDE
CHEMICAL BONDS
CHEMICAL REACTION KINETICS
COAL LIQUEFACTION
COAL LIQUIDS
CRESOLS
PHENOLS
PROGRESS REPORT
PURIFICATION
SPECTRA
AROMATICS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
COMPLEXES
DOCUMENT TYPES
ELEMENTS
ENERGY
FLUIDS
HYDROXY COMPOUNDS
KINETICS
LIQUEFACTION
LIQUIDS
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPLEXES
010402* - Coal
Lignite
& Peat- Purification & Upgrading
010405 - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
400201 - Chemical & Physicochemical Properties