Phosphorothioic Acids and Related Compounds as Surrogates for H<sub>2</sub>S—Synthesis of Chiral Tetrahydrothiophenes
作者:Forest J. Robertson、Jimmy Wu
DOI:10.1021/ja210758n
日期:2012.2.8
The convenient preparation of chiral tetrahydrothiophenes (THTs) in high enantiopurity via phosphorothioic acids and related compounds is reported. We consider these to be safer alternatives to the use of H(2)S which is a highly toxic gas. Each of the THTs is derived from a common intermediate, thereby greatly enhancing the flexibility of the synthesis. The key transformation is a base-promoted, intramolecular
报道了通过硫代磷酸和相关化合物方便地制备高对映纯度的手性四氢噻吩 (THT)。我们认为这些是使用 H(2)S(一种剧毒气体)的更安全替代品。每个THTs都来源于一个共同的中间体,从而大大提高了合成的灵活性。关键的转化是碱基促进的、分子内的、碳-硫键形成事件。这些反应是高度立体定向的,因为它们通过双 S(N)2 置换机制进行操作。该方法适用于广泛的官能团和杂环。四氢噻吩基序很重要,因为它存在于许多生物活性天然产物中。它们还被用于促进各种不对称转化,包括氢化、环氧化、