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- W2028350848 abstract "2-Phenylsulphonyl-2-trimethylsilyloxiranes 2 are efficiently prepared by treatment of 2-phenylsulphonyloxiranes 3 with butyllithium in the presence of chlorotrimethylsilane at low temperatures. Reaction of 3-alkyl-2-phenylsulphonyl-2-trimethylsilyloxiranes 2, in which the alkyl group is primary, with magnesium bromide at room temperature gives 2-bromoacyl silanes 1 in good yield. Reaction at higher temperatures leads to competing formation of bromovinyl sulphones 7. Reaction of 3,3dialkyloxiranes with magnesium bromide occurs much more readily, leading to 2-bromoacyll silanes 1 in moderate yields. Other products derived from a common carbocationic intermediate are also isolated." @default.
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- W2028350848 date "1991-01-01" @default.
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- W2028350848 title "A new method for the synthesis of α-bromoacyl silanes via ring-opening of 2-phenylsulphonyl-2-trimethylsilyloxiranes" @default.
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- W2028350848 doi "https://doi.org/10.1039/p19910003103" @default.
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