Chemistry of Heterocyclic Compounds p. 889 - 891 (1993)
Update date:2022-08-04
Topics: Thiophenes Electrophilic
Gromova, G. P.
Belen'kii, L. I.
Krayushkin, M. M.
The electrophilic trichloromethylation of 3-chloro-, 3-bromo-, and 3,4-dibromothiophene was studied. It is shown that reaction is directed towards position 2, accompanied by frequent formation of the corresponding substituted di-(2-thienyl)dichloromethane. Trichloromethylation of β-bromothiophenes is complicated by exchange of chlorine for bromine under the reaction conditions.
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