【摘 要】
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Polysubstituted cyclopropanes were efficiently prepared with poly(ethylene glycol)(PEG) as soluble support. The reaction of PEG-supported pyridinium ylide with
【出 处】
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Chemical Research in Chinese Universities
论文部分内容阅读
Polysubstituted cyclopropanes were efficiently prepared with poly(ethylene glycol)(PEG) as soluble support. The reaction of PEG-supported pyridinium ylide with arylidenemalononitrile(R=CN) or ethyl arylidenecyanoa-cetate(R=COOEt) in the presence of triethylamine(TEA) afforded PEG-supported cyclopropanecarboxylates, which were cleaved by 1% KCN/EtOH to obtain polysubstituted cyclopropanes with exclusive trans-selectivity and good yields.
Polysubstituted cyclopropanes were efficiently prepared with poly (ethylene glycol) (PEG) as soluble support. The reaction of PEG-supported pyridinium ylide with arylidenemalononitrile (R═CN) or ethyl arylidenecyanoa- cetate (R═COOEt) in the presence of triethylamine ) afforded PEG-supported cyclopropanecarboxylates, which were cleaved by 1% KCN / EtOH to obtain polysubstituted cyclopropanes with exclusive trans-selectivity and good yields.
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