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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 36941Generated: October 28, 2026

Ethanol → HCID 19936580, compound

https://huagongshe.com/reaction/36941

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthanolHCID 702—
ReactantHCID 19936579HCID 19936579—
ReactantBoron tribromide dichloromethaneHCID 22277759—
SolventDichloromethaneHCID 6344—
ProductHCID 19936580HCID 1993658083.6%

Reaction Steps

To a solution of 5-(3,5-di-tert-butyl-4-hydroxybenzoyl)-6-methoxyindan (3.8 g) in dichloromethane (30 ml) was added boron tribromide-dichloromethane (1:2, 3 ml) dropwise with ice-cooling and stirring. The mixture was stirred under ice-cooling for 15 minutes, after which ethanol (5 ml) was added dropwise. The mixture was then washed with water and dried (MgSO4) and the solvent was distilled off. To the residue was added hexane to give crystals of 5-(3,5-di -tert-butyl-4-hydroxybenzoyl)-6-hydroxyindan (3.06 g, 83.6% ) . Recrystallization from ethanol gave light yellow prisms, m.p. 155°-156° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05418239
Source datasetuspto-grants-1995_05
ORD IDord-2382ad783faa417ea3b8088e12056cd7
Source noteuspto-grants-1995_05