Convenient High-Yield Procedures for 2-Bromothiophene and 2,5-Dibromothiophene

Article abstract of DOI:10.1055/s-1988-27740

2-Bromothiophene is obtained in high yields by adding a solution of bromine in 48percent hydrobromic acid or a 35percent aqueous solution of hydrogen peroxide to a mixture of thiophene, diethyl ether, and 48percent hydrobromic acid. 2,5-Dibromothiophene is obtained in >90percent yields from thiophene and bromine in hydrobromic acid.