Synthesis of β,β-Disubstituted γ-Butyrolactones by Chemoselective Oxidation of 1,4-Diols and γ-Hydroxy Olefins with RuCl3/NaIO4
作者:Daniel Canney、Rong Gao、Rong Fan
DOI:10.1055/s-0034-1379614
日期:——
β-substituted lactones exist, led to the development of an efficient approach for the synthesis of β,β-disubstituted γ-butyrolactones. Readily prepared substituted 1,4-diols and γ-hydroxy olefins were treated with the RuCl 3 /NaIO 4 oxidation system to provide the target β,β-disubstituted γ-butyrolactones in modest to good yields. The reaction goes through a lactol intermediate that was isolated and characterized
取代的 γ-丁内酯代表了一组重要的结构片段,常见于天然产物、受体配体和药物分子中。对制备取代 γ-丁内酯库的兴趣以及发现 β-取代内酯存在有限途径的兴趣导致开发了一种合成 β,β-二取代 γ-丁内酯的有效方法。用RuCl 3 /NaIO 4 氧化系统处理容易制备的取代的1,4-二醇和γ-羟基烯烃,以中等至良好的产率提供目标β,β-二取代的γ-丁内酯。该反应经过一个内酯中间体,该中间体被分离出来并表征为选定的化合物。该方法为合成这些重要的杂环结构提供了一种有效且通用的方法。重要的,