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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 358830Generated: October 30, 2026

2-Methyl-2-propenyl 5-bromo-3-(2-methyl-2-propenyl)-2-hydroxybenzoate → 5-Bromo-2,3-dihydro-2,2-dimethylbenzofuran-7-carboxylic acid

https://huagongshe.com/reaction/358830

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2-Methyl-2-propenyl 5-bromo-3-(2-methyl-2-propenyl)-2-hydroxybenzoateHCID 15728737—
SolventFormic AcidHCID 284—
Product5-Bromo-2,3-dihydro-2,2-dimethylbenzofuran-7-carboxylic acidHCID 1483840120%

Reaction Steps

The title intermediate was prepared in 20% yield from 2-methyl-2-propenyl 5-bromo-3-(2-methyl-2-propenyl) -2-hydroxybenzoate upon heating at reflux with 90% formic acid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04997956
Source datasetuspto-grants-1991_03
ORD IDord-f34d7c884f024072aaf5bf0801dcd51f
Source noteuspto-grants-1991_03