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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1856488Generated: November 2, 2026

Bromine → HCID 23345398, compound

https://huagongshe.com/reaction/1856488

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBromineHCID 24408—
Reactant1,3-Dihydro-2H-2-benzothiophene-2,2-dioneHCID 313675—
CatalystIronHCID 23925—
SolventCarbon TetrachlorideHCID 5943—
ProductHCID 23345398HCID 23345398—

Reaction Steps

1,3-Dihydrobenzo[c]thiophene 2,2-dioxide [Chem. & Ind., 1024 (1965)] is brominated according to the method described in Khim. Tadzh., 107 (1973), [C.A., 84, 89,930 (1976)], using bromine (1.1 equivalents) in refluxing carbon tetrachloride which contains iron until the bromine color is dissipated. Removal of the carbon tetrachloride and recrystallization from ethanol gives 4-bromo-1,3-dihydrobenzo[c]thiophene 2,2-dioxide.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04219648
Source datasetuspto-grants-1980_08
ORD IDord-bbe8f740211946818cbc177c0ededa54
Source noteuspto-grants-1980_08