Aminohydroxylation of olefins with iminopyridinium ylides by dual Ir photocatalysis and Sc(OTf)3 catalysis
作者:Kazuki Miyazawa、Takashi Koike、Munetaka Akita
DOI:10.1016/j.tet.2016.05.045
日期:2016.12
We have developed a new strategy for catalytic aminohydroxylation of olefins with an N-protected iminopyridinium ylide as the amine source. Iminopyridinium ylides N-protected with TFAc (trifluoroacetyl), Boc (tert-butoxycarbonyl), Troc (2,2,2-trichloroethoxycarbonyl), and Alloc (allyloxycarbonyl) groups serve as N-centered radical precursors when combined with fac-[Ir(ppy)3] photocatalysis and Sc(OTf)3
我们已经开发了一种新的策略,以N保护的亚氨基吡啶鎓内鎓盐作为胺源进行烯烃的催化氨基羟基化。Iminopyridinium叶立德Ñ -保护用TFAC(三氟乙酰基),BOC(叔丁氧羰基),TROC(2,2,2-三氯乙氧),或Alloc(烯丙氧基羰)基团作为ñ -centered自由基前体当与组合FAC -物[Ir( ppy)3 ]光催化和Sc(OTf)3催化。事实证明,双重Ir光氧化还原/ Sc(OTf)3催化可在温和的反应条件下有效地进行烯烃的氨基羟基化反应,以提供带有伯氨基的2-氨基醇衍生物。