Enantioselective Synthesis of 3a-Amino-Pyrroloindolines by Copper-Catalyzed Direct Asymmetric Dearomative Amination of Tryptamines
作者:Chuan Liu、Ji-Cheng Yi、Zhong-Bo Zheng、Yong Tang、Li-Xin Dai、Shu-Li You
DOI:10.1002/anie.201508570
日期:2016.1.11
A direct asymmetric dearomative amination of tryptamines with O‐(2,4‐dinitrophenyl)hydroxylamine (DPH) was achieved using CuBr‐bisoxazoline complex as a catalyst, affording 3a‐amino‐pyrroloindolines in good to excellent enantioselectivity under mild reaction conditions. Furthermore, the synthetic value of this method was demonstrated in the total synthesis of (−)‐psychotriasine in a highly concise
使用CuBr-双恶唑啉配合物作为催化剂,可实现O-(2,4-二硝基苯基)羟胺(DPH)对类胺的直接不对称脱芳香化胺化作用,在温和的反应条件下可提供良好或优异的对映选择性的3a-氨基-吡咯啉二氢吲哚。此外,该方法的合成价值以高度简明的方式在(-)-精神神经碱的全合成中得到了证明。