Reactions of 2-benzo[b]thienyl (2-BTyl) complexes with acid to give Cp(PMe[sub 3])[sub 2]Ru([eta][sup 1](S)-BT)[sup +] and Cp(CO)(PPh[sub 3])Ru([eta][sup 1](S)-BT[sup +]): A model for benzo[b]thiophene (BT) deuterium exchange on hydrodesulfurization catalysis
- Iowa State Univ., Ames (United States)
Hydrodesulfurization (HDS) of benzo[b]thiophene (BT) over Co-Mo/Al[sub 2]O[sub 3] catalysts to give ethylbenzene and H[sub 2]S is proposed to occur by two mechanistic pathways either by initial hydrogenation to give 2,3-dihydrobenzothiophene followed by desulfurization to form the final products or by initial desulfurization to give vinylbenzene followed by hydrogenation to ethylbenzene. Regardless of the pathway, the reaction involves only the thiophenic part of BT as the benzene ring is not hydrogenated. Also, deuterium exchange of BT, when passed with D[sub 2] over HDS catalysts, occurs predominantly in the 2- and 3-positions of the thiophene rather than in the benzene ring. A mechanism which accounts for this deuterium exchange has been proposed by Cowley. In order to probe the possibility that [sigma]-coordination of 2-benzothienyl (2-BTyl) to a metal accounts for deuterium exchange at the 2-position as proposed by Cowley, the authors describe herein the synthesis of 2-BTyl complexes of Ru and examine their reactions with CF[sub 3]SO[sub 3]H. 19 refs., 2 figs.
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 6236016
- Journal Information:
- Inorganic Chemistry; (United States), Vol. 32:9; ISSN 0020-1669
- Country of Publication:
- United States
- Language:
- English
Similar Records
Synthesis and protonation of the bridging Benzo[b]thiophene (BT) complexes Cp'(CO)[sub 2]Re([eta][sup 2]:[eta][sup 1](S)-[mu][sup 2]-BT)[Re(CO)[sub 2]Cp']
Synthesis, structure, and reactivity of thienyl-, benzothienyl-, and selenylcarbene complexes of rhenium. A new mechanicm of H/D exchange during hydrodesulfurization
Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
01 COAL, LIGNITE, AND PEAT
INORGANIC ACIDS
CHEMICAL REACTIONS
POLYCYCLIC SULFUR HETEROCYCLES
RUTHENIUM COMPLEXES
CARBONYLS
CATALYSIS
CATALYSTS
DESULFURIZATION
DEUTERIUM
HYDROGENATION
ISOTOPIC EXCHANGE
ORGANOMETALLIC COMPOUNDS
THIOPHENE
COMPLEXES
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
STABLE ISOTOPES
TRANSITION ELEMENT COMPLEXES
400201* - Chemical & Physicochemical Properties
010402 - Coal
Lignite
& Peat- Purification & Upgrading