Three-step synthesis of chiral and sterically hindered amino alcohols based on cyclic enol phosphates
作者:Krzysztof Owsianik、Ewa Krawczyk、Grażyna Mielniczak、Marek Koprowski、Lesław Sieroń
DOI:10.1016/j.tet.2018.10.072
日期:2018.12
The new synthesis of chiral and sterically hindered 1,2-amino alcohols derivatives of 2-methyl-indane and 1,2,3,4-tethrahydrophenanthrene based on cyclic enol phosphates were investigated. The desired products were obtained using three step procedure: oxidation of accessible enol phosphates, transformation α-hydroxy ketones into corresponding oximes and finally reduction of the last one to 1,2-amino
研究了基于环烯醇磷酸酯的2-甲基茚满和1,2,3,4-四氢菲菲的手性和空间位阻1,2-氨基醇衍生物的新合成方法。使用三个步骤的步骤即可获得所需的产物:可氧化的烯醇式磷酸酯的氧化,将α-羟基酮转化为相应的肟,最后将最后一种还原为1,2-氨基醇。找到并阐述了获得高对映选择性或非对映异构体比例的所有阶段的最佳条件。通过X射线分析证实了(3 R)-2,3-二氢-3-羟基-1 H-菲基-4-酮和相应的肟的结构和绝对构型。