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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1581870Generated: October 25, 2026

Iodine → 2-Bromo-7-iodo-9H-fluorene

https://huagongshe.com/reaction/1581870

Reaction equation

Participants

RoleNameHCIDCharge
ReactantIodineHCID 807—
ReactantSulfuric AcidHCID 1118—
Reactant2-Bromo-9H-fluoreneHCID 14336—
ReactantIodic acidHCID 24345—
SolventAcetic AcidHCID 176—
SolventWaterHCID 962—
Product2-Bromo-7-iodo-9H-fluoreneHCID 14290982317%

Reaction Conditions

Temperature85 °C

Reaction Steps

A mixture of 2-bromofluorene (12.61 g, 50 mmol), acetic acid (125 mL), water (9 mL), concentrated sulfuric acid (4 mL), iodine (5.1 g, 20.1 mmol) and iodic acid (2.2 g, 12.5 mmol) was heated at 80-90° C. for 2 hours, cooled and filtered. The solids were washed with acetic acid (100 mL) and water (500 mL), to get the product 14.7 g (79% yield), m.p. 179-185° C. Mass Spec. (m/z): 418 (M+ diiodo), 370, 372 (M+iodobromo), 322, 324, 326 (M+ dibromo).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06730793B1
Source datasetuspto-grants-2004_05
ORD IDord-ab7d9b625eb6423f9f15f925eddfbb72
Source noteuspto-grants-2004_05