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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2103145Generated: October 29, 2026

Ethyl 3,4-Dihydroxybenzoate → 2,2-Bis-(3,5-difluoro-phenyl)-benzo[1,3]dioxole-5-carboxylic acid ethyl ester

https://huagongshe.com/reaction/2103145

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl 3,4-DihydroxybenzoateHCID 77547—
ReactantHCID 22475077HCID 22475077—
SolventDichloromethaneHCID 6344—
Product2,2-Bis-(3,5-difluoro-phenyl)-benzo[1,3]dioxole-5-carboxylic acid ethyl esterHCID 6905909587.8%

Reaction Steps

239 mg dichloro-bis(3,5-difluorophenyl)methane and 141 mg ethyl 3,4-dihydroxybenzoate were heated to 180° C. for 2 h 15 min. The brown mixture was diluted with dichloromethane, washed with sat. NaHCO3 solution and water. The dried solution was evaporated and the residue purified on silica gel to provide 284 mg resinous oil. MS: 419 ([M+H]+).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07576088B2
Source datasetuspto-grants-2009_08
ORD IDord-f087e36070194054b21cb37685a6aea7
Source noteuspto-grants-2009_08