Oxidation of 2,5-bis(silyl)thiophenes (1) with m-chloroperbenzoic acid (m-CPBA) in the presence of BF3(Et(2)O) gave the corresponding S-oxides (2) in moderate yields, while, without BF3(Et(2)O), the oxidation gave solely the corresponding thiophene S-dioxides (3) and no S-oxide was obtained at all. This procedure was successfully applied to the synthesis of other 2,5-bis-substituted thiophene monooxides.
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UNIV PARIS 05, CHIM & BIOCHIM PHARMACOL & TOXICOL LAB, CNRS, URA 400, F-75270 PARIS 06, FRANCEUNIV PARIS 05, CHIM & BIOCHIM PHARMACOL & TOXICOL LAB, CNRS, URA 400, F-75270 PARIS 06, FRANCE
LOPEZGARCIA, MP
;
DANSETTE, PM
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UNIV PARIS 05, CHIM & BIOCHIM PHARMACOL & TOXICOL LAB, CNRS, URA 400, F-75270 PARIS 06, FRANCEUNIV PARIS 05, CHIM & BIOCHIM PHARMACOL & TOXICOL LAB, CNRS, URA 400, F-75270 PARIS 06, FRANCE
DANSETTE, PM
;
MANSUY, D
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UNIV PARIS 05, CHIM & BIOCHIM PHARMACOL & TOXICOL LAB, CNRS, URA 400, F-75270 PARIS 06, FRANCEUNIV PARIS 05, CHIM & BIOCHIM PHARMACOL & TOXICOL LAB, CNRS, URA 400, F-75270 PARIS 06, FRANCE
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UNIV PARIS 05, CHIM & BIOCHIM PHARMACOL & TOXICOL LAB, CNRS, URA 400, F-75270 PARIS 06, FRANCEUNIV PARIS 05, CHIM & BIOCHIM PHARMACOL & TOXICOL LAB, CNRS, URA 400, F-75270 PARIS 06, FRANCE
LOPEZGARCIA, MP
;
DANSETTE, PM
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UNIV PARIS 05, CHIM & BIOCHIM PHARMACOL & TOXICOL LAB, CNRS, URA 400, F-75270 PARIS 06, FRANCEUNIV PARIS 05, CHIM & BIOCHIM PHARMACOL & TOXICOL LAB, CNRS, URA 400, F-75270 PARIS 06, FRANCE
DANSETTE, PM
;
MANSUY, D
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UNIV PARIS 05, CHIM & BIOCHIM PHARMACOL & TOXICOL LAB, CNRS, URA 400, F-75270 PARIS 06, FRANCEUNIV PARIS 05, CHIM & BIOCHIM PHARMACOL & TOXICOL LAB, CNRS, URA 400, F-75270 PARIS 06, FRANCE