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发明授权
CN108503609B 一种制备光学纯的(R)-4-正丙基-二氢呋喃-2(3H)-酮的方法 有权

一种制备光学纯的(R)-4-正丙基-二氢呋喃-2(3H)-酮的方法
摘要：
本发明涉及一种制备光学纯的(R)‑4‑正丙基‑二氢呋喃‑2(3H)‑酮的方法。该方法以光学纯的(S)‑3‑正戊酰基‑4‑取代的噁唑‑2‑酮为原料，经过与烯烃或炔烃试剂进行烷基化反应，还原脱除手性辅基，双键或三键的氧化等步骤制备得到学纯的(R)‑4‑正丙基‑二氢呋喃‑2(3H)‑酮。本发明提供的制备方法原料易得，价格低廉，且总收率高、所得产物光学纯度高、反应条件和操作过程简单。
摘要（英）：

The present invention relates to an optically pure (R)-4-n-propyl-dihydrofuran-2(3H)-one preparation method, wherein optically pure (S)-3-n-pentanoyl-4-substituted oxazole-2-one is used as a raw material, alkylation reaction with an olefin or alkyne reagent, reducing removal of a chiral auxiliary group, oxidation of double bond or triple bond and other steps are performed to prepare the opticallypure (R)-4-n-propyl-dihydrofuran-2(3H)-one. According to the present invention, the preparation method has characteristics of easily available raw material, low cost, high total yield, high optical purity of the obtained product, simple reaction conditions and simple operation process.

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