C - Chemistry – Metallurgy – 25 – B
Patent
C - Chemistry, Metallurgy
25
B
204/52.3
C25B 3/00 (2006.01) C07D 333/08 (2006.01) C07D 333/10 (2006.01) C07D 333/28 (2006.01) C25B 3/04 (2006.01)
Patent
CA 2009314
- 1 - Abstract of the disclosure Process for the preparation of thiophene derivatives Selectively dehalogenated thiophene derivatives are obtained from compounds of the formula II Image (II) by an electrochemical reaction in a divided electrolysis cell in the presence of a suitable solvent, an onium compound or a compound which is converted into an onium compound in the electrolyte, and a conducting salt. Thiophene derivatives are important intermediates in the production of pharmaceuticals and plant protection agents.
Dapperheld Steffen
Feldhues Michael
Litterer Heinz
Sistig Frank P.
Wegener Peter
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Hoechst Aktiengesellschaft
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