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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1987445Generated: November 1, 2026

1,3-Cyclopentadiene, 5-(1-methylethylidene)- → 2-Bromo-9H-fluorene

https://huagongshe.com/reaction/1987445

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1,3-Cyclopentadiene, 5-(1-methylethylidene)-HCID 137467—
Reactant2,7-DibromofluoreneHCID 140073—
Product2-Bromo-9H-fluoreneHCID 14336—

Reaction Steps

2-Bromoethylbenzene was obtained from 2-ethylaniline (Acros) as described in Hansch, C.; Geiger, C. J. Org. Chen. 1959, 24, 1025. Cyclopentadiene was obtained by thermal cracking of dicyclopentadiene (Acros). 2,7-Dibromo-9H-fluorene [Kajigaeshi, S.; Kakinami, T.; Moriwaki, M.; Tanaka, T.; Fujisaki, S.; Okamoto, T. Bull. Chem. Soc. Jap. 1989, 62, 439], 6,6-dimethylfulvene [Buttrus, N. H.; Comforth, J.; Hitchcock, P. B.; Kumar, A.; Stuart, A. S. J. Chem. Soc., Perkin Trans. 1 1987, 851], and 2-bromo-9H-fluorene [Kajigaeshi, S.; Kakinami, T.; Moriwaki, M.; Tanaka, T.; Fujisaki, S.; Okamoto, T. Bull. Chem. Soc. Jap. 1989, 62, 439] were prepared according to the published methods.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07550544B2
Source datasetuspto-grants-2009_06
ORD IDord-29c6300719f04705b77ef76dcf49e9eb
Source noteuspto-grants-2009_06