alkyl, and ester) at the C3 and C4 positions of the resulting isoxazolines were also tolerated. A quick assembly of the isoxazoline ring starting from nitroalkenes and malonates was successfully developed. Control experiments showed that the intramolecular ring closure is the most likely key mechanistic step. Subsequent transformations into pyrrolidine and furane derivatives demonstrated the synthetic
发现硝基烷基
丙二酸酯的酰化产生取代的
异恶唑啉衍
生物。这种
氧化还原中性转化具有广泛的底物范围,可生产目标产物,产率高达 92%。在所得
异恶唑啉的 C3 和 C4 位置上的各种取代基(芳基、烷基和
酯)也是可以接受的。成功开发了以硝基
烯烃和
丙二酸酯为原料的
异恶唑啉环的快速组装。对照实验表明,分子内闭环是最可能的关键机械步骤。随后转化为
吡咯烷和
呋喃衍
生物证明了所得产品的合成效用。