Fe(OTf) 3 -catalyzed tandem Meyer-Schuster rearrangement/intermolecular hydroamination of 3-aryl propargyl alcohols for the synthesis of acyclic β-Aminoketones
作者:Ruiheng Tao、Yan Yin、Yongbin Duan、Yuxing Sun、Yue Sun、Fengkai Cheng、Jinpeng Pan、Cheng Lu、Yuan Wang
DOI:10.1016/j.tet.2017.02.030
日期:2017.3
Fe(OTf)3-catalyzed synthesis of acyclic β-aminoketones from 3-aryl propargyl alcohols and nitrogen nucleophiles were investigated. Results showed that propargyl alcohols without bulky groups α to the hydroxyl group underwent the transformation smoothly. Sulphonamides exhibited the higher reactivity than amides as the nitrogen nucleophiles and the transformation of acyclic β-aminoketones were finished
研究了Fe(OTf)3催化的3-芳基炔丙醇和氮亲核试剂合成无环β-氨基酮。结果表明,没有在羟基上具有大的基团α的炔丙醇顺利地进行了转化。磺酰胺显示出比酰胺更高的反应性,这是因为氮亲核试剂和无环β-氨基酮的转化以更短的反应时间和更高的收率完成。最后,本步骤作为第一步可有效地获得外消旋氟西汀。这种新型的无环β-氨基酮的合成可能是由Fe(OTf)3催化的3-芳基炔丙醇的Meyer-Schuster重排,然后是氮亲核体与α,β-不饱和酮之间的分子间加氢胺化作用。