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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 850039Generated: October 29, 2026

Bromine → HCID 21185375, compound

https://huagongshe.com/reaction/850039

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBromineHCID 24408—
ReactantHCID 21185385HCID 21185385—
ReactantButyllithiumHCID 178418339—
SolventWaterHCID 962—
SolventTetrahydrofuranHCID 8028—
ProductHCID 21185375HCID 2118537517.2%

Reaction Steps

n-Butyllithium (2.5 mmol) was slowly added to a solution of 3-(2,6-dichlorophenyl)-5-(3,4,5-trichlorothien-2-yl)-1-methyl[1,2,4]triazole (325 mg, 1.0 mmol) in THF at -78° C., and the mixture was stirred one hour. Bromine (3.0 mmol) was added and the reaction stirred two hours, then diluted with water, extracted with ether, washed with brine, and dried over magnesium sulfate. The product was concentrated to 620 mg of dark oil. This was chromatographed (SiO2, 10% EtOAc-Hex) to give 79 mg of the title product as a pink solid. MP 197-199° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06015826
Source datasetuspto-grants-2000_01
ORD IDord-faa2b29b96d440a7ac1e21a7e33e167a
Source noteuspto-grants-2000_01