alpha-Ketosulphides of benzothiazole 1 react with allylic carbonates in the presence of palladium acetate in dichloromethane under mild conditions affording 0t, a-diallylated ketosulphides 2 in high yields. Reduction of 2 with sodium borohydride in isopropanol gives episulphides which in turn can be transformed almost quantitatively into trienes
Palladium-catalyzed synthesis of alfa-diallylated keto sulfides of benzothiazole and their transformation into diallyl thiiranes and trienes
NACCI, Angelo;SCILIMATI, Antonio
1995-01-01
Abstract
alpha-Ketosulphides of benzothiazole 1 react with allylic carbonates in the presence of palladium acetate in dichloromethane under mild conditions affording 0t, a-diallylated ketosulphides 2 in high yields. Reduction of 2 with sodium borohydride in isopropanol gives episulphides which in turn can be transformed almost quantitatively into trienesFile in questo prodotto:
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