Intermolecular cycloaddition of ethyl glyoxylate O-tert- butyldimethylsilyloxime with alkenes
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Ethyl glyoxylate O-tert-butyldimethylsilyloxime, on treatment with various alkenes in the presence of BF3·OEt2, generated a C-ethoxycarbonyl N-boranonitrone intermediate, which underwent intermolecular cycloaddition to afford 3-(ethoxycarbonyl)isoxazolidines in moderate to high yields. © Georg Thieme Verlag Stuttgart.
- 2007-03-01
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