Indenes from tetrahydroindenes
AssigneeThe Standard Oil Company
InventorsOliver A. Kiikka, George S. Li
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Abstract
A dehydrogenation process for producing indene and substituted indenes from tetrahydroindene or substituted tetrahydroindene is described and comprises contacting said tetrahydroindene or substituted tetrahydroindene with a catalyst comprising cobalt oxide and molybdenum oxide at an elevated temperature for a period of from about 0.1 to 30 seconds. The tetrahydroindene and substituted tetrahydroindenes may be prepared from cyclopentadiene or dicyclopentadiene and a butadiene.
Claims15
A dehydrogenation process for producing indene and substituted indenes from tetrahydroindene or substituted tetrahydroindene which comprises contacting said tetrahydroindene or substituted tetrahydroindene with a catalyst comprising cobalt oxide and molybdenum oxide at an elevated temperature for a period of from 0.1 to 30 seconds.
A process for producing indene and substituted indenes which comprises the steps of
- (a) reacting cyclopentadiene or dicyclopentadiene with a butadiene to form a mixture of a tetrahydroindene, vinyl norbornene and vinyl cyclohexene,
- (b) recovering the tetrahydroindene and vinyl norbornene from the mixture,
- (c) converting the vinyl norbornene to a tetrahydroindene in a heated tube and combining said tetrahydroindene with the tetrahydroindene recovered in step (b), and
- (d) dehydrogenating the tetrahydroindene to an indene by contacting said tetrahydroindene with a catalyst comprising molybdenum oxide and cobalt oxide at an elevated temperature for a period of from about 0.1 to 30 seconds.
Dependencies are inferred from the claim text.