Preconversion catalytic deoxygenation of phenolic functional groups
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:
- DOE; 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
Similar Records
Preconversion catalytic deoxygenation of phenolic functional groups. Quarterly technical progress report, April 1, 1992--June 30, 1992
Preconversion catalytic deoxygenation of phenolic functional groups
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ACTIVATION ENERGY
AROMATICS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL BONDS
CHEMICAL REACTION KINETICS
COAL LIQUEFACTION
COAL LIQUIDS
COMPLEXES
CRESOLS
DOCUMENT TYPES
ELEMENTS
ENERGY
FLUIDS
HYDROXY COMPOUNDS
IRIDIUM COMPLEXES
KINETICS
LIQUEFACTION
LIQUIDS
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHENOLS
PHOSPHINES
PHOSPHORUS COMPOUNDS
PLATINUM COMPLEXES
PROGRESS REPORT
PURIFICATION
REACTION KINETICS
REMOVAL
RHODIUM COMPLEXES
SPECTRA
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPLEXES