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中文摘要：
由 chiral N-triflyl phosphoramide 的激活的、不饱和的酉同类的不对称的 intramolecular oxa-Michael 增加被认识到。黄烷酮产品能与优秀收益(50%95%) 和多达 74% ee 被综合。
英文摘要：
Asymmetric intramolecular oxa-Michael addition of activated α,β-unsaturated ketones by chiral N-triflyl phosphoramide was realized. The flavanone products can be synthesized with excellent yields （50%-95%） and up to 74% ee.
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