Bromine → HCID 23345398, compound

HRID 1856488Notes

Reaction equation

HRID 1856488 reaction equation
[CH2:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[CH2:3][S:2]1(=[O:11])=[O:10].[Br:12]Br>[Fe].C(Cl)(Cl)(Cl)Cl>[Br:12][C:9]1[C:4]2[CH2:3][S:2](=[O:10])(=[O:11])[CH2:1][C:5]=2[CH:6]=[CH:7][CH:8]=1

Participants

5

Reactant 2

HCID 24408Bromine2×HCID 3136751,3-Dihydro-2H-2-benzothiophene-2,2-dione

Product 1

HCID 23345398HCID 23345398, compound

Reagents, catalysts & solvents 2

HCID 23925IronCatalystHCID 5943Carbon TetrachlorideSolvent

Procedure

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.

Workup

  1. customRemoval of the carbon tetrachloride and recrystallization from ethanol

Sources & evidence

ORD record
ord-bbe8f740211946818cbc177c0ededa54
Source dataset
uspto-grants-1980_08
Patent number
US04219648

Reaction notes

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