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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1699144Generated: October 31, 2026

Indene → Fluorene

https://huagongshe.com/reaction/1699144

Reaction equation

Participants

RoleNameHCIDCharge
ReactantIndeneHCID 7219—
Reactant2,3,4,9-Tetrahydro-1H-fluoreneHCID 588465—
ProductFluoreneHCID 6853—
ProductIndaneHCID 10326—

Reaction Steps

A portion of the 2:1 fraction (by molar ratio) of indene and tetrahydrofluorene obtained in Example 1 was charged in an autoclave, and was then reacted and processed in a similar manner as in Example 1 except that Pd/Al2O3 (5% Pd supported on alumina) was added as a catalyst in a proportion of 1%. As a result of an analysis by gas chromatography, fluorene and indane were found to have been formed with a yield of 96% (based on tetrahydrofluorene) and with a yield of 95% (based on indene), respectively.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06344585B2
Source datasetuspto-grants-2002_02
ORD IDord-8fff5580102f495a87b8c7703c43d2aa
Source noteuspto-grants-2002_02