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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1195302Generated: October 25, 2026

Iodine → 2-[3,4-(Methylenedioxy)phenyl]-2-butanol

https://huagongshe.com/reaction/1195302

Reaction equation

Participants

RoleNameHCIDCharge
ReactantIodineHCID 807—
ReactantEthyl BromideHCID 6332—
ReactantAmmonium ChlorideHCID 25517—
ReactantAcetopiperoneHCID 76622—
ReactantMagnesiumHCID 5462224—
SolventWaterHCID 962—
SolventTetrahydrofuranHCID 8028—
Product2-[3,4-(Methylenedioxy)phenyl]-2-butanolHCID 1900169895.9%

Reaction Steps

15 ml of tetrahydrofuran and a catalytic amount of iodine were added to 340 mg of magnesium ribbon to obtain a mixture. 1.59 g of bromoethane was gradually added to the mixture in a stream of nitrogen in such a way that the reaction system was mildly refluxed. The resulting mixture was heated under reflux for 30 minutes and cooled, followed by the addition of a solution of 2 g of 5-acetyl-1,3-benzodioxole in tetrahydrofuran. The obtained mixture was stirred at a room temperature for 20 minutes, followed by the addition of a saturated aqueous solution of ammonium chloride and water. The obtained mixture was extracted with ethyl acetate. The organic layer was washed with a saturated aqueous solution of common salt, dried over anhydrous magnesium sulfate and filtered. The filtrate was distilled to remove the solvent. 2.27 g of the title compound was obtained as a crude oil.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05110956
Source datasetuspto-grants-1992_05
ORD IDord-45344b7308bd4bdf8758bd4bd4efbdd3
Source noteuspto-grants-1992_05