Efficient Synthesis of α,β-Epoxy Carbony
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Zong-Ting Wang; Li-Wen Xu; Chun-Gu Xia; Han-Qing Wang
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Article
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2004
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John Wiley and Sons
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German
⚖ 86 KB
## Abstract The __Darzens__ reaction of ethyl 2‐chloroacetate (**1**) with aromatic aldehydes **2** in the presence of polymer‐supported or nonsupported quaternary ammonium salts proceeds under mild conditions by phase‐transfer catalysis to give the corresponding epoxides **3** in satisfactory yiel