The reaction of 1-methoxymethyl-2-phenylthiocyclobutanes with phenylthiotrimethylsilane followed by hydrolysis gave (E)- and (Z)-gamma,delta -unsaturated ketones with high stereoselectivity. The starting materials were easily prepared by die stereoselective addition of Grignard reagents to trans -2-phenylthiocyclobutyl ketones.
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页码:1321 / 1324
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CARRUTHERS WC, 1986, SOME MODERN METHODS, P148