Asymmetric oxidation and determination o
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Takeshi Kimura; Hidetaka Nakayama; Naomichi Furukawa
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Article
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1996
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John Wiley and Sons
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English
β 664 KB
I , 9-Bis(methylthio)dibenzothiophene (la) was treated with one equivalent of bromine and pyridine i n the presence of 1-menthol and then with aqueous sodium hydroxide to give optically active I-(methylsulfinyl)-9-(methy1thio)dibenzothiophene (2a) enriched by the S isomer (ee: 57%). The configuratio