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Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 95:441-443
Regioselective benzylation of thiophene and benzothiophene using benzyl chloride and a ZnCl2-promoted montmorillonite catalyst is described. An improved process for the cyclization of (arylthio)acetaldehyde dialkyl acetals to benzothiophenes using th