Catalytic Asymmetric Friedel–Crafts/Protonation of Nitroalkenes and <i>N</i>-Heteroaromatics
作者:Takayoshi Arai、Atsuko Awata、Makiko Wasai、Naota Yokoyama、Hyuma Masu
DOI:10.1021/jo200546a
日期:2011.7.1
The catalytic asymmetric Friedel–Crafts/protonation of indoles and pyrroles with α-substituted nitroalkenes to give the corresponding adducts in a highly anti-selective manner was achieved by an imidazoline–aminophenol (L2)–Cu complex. The anti-adducts could be successfully transformed to biochemically important α-substituted β-heteroarylalkylamines.
咪唑啉-氨基苯酚(L2)-铜络合物实现了吲哚和吡咯与α-取代的硝基烯烃的催化不对称弗里德尔-克拉夫特/质子化反应,从而以高度抗选择性的方式给出了相应的加合物。该抗加合物可以成功地转化为生物化学上重要的α-取代的β-杂芳基烷基胺。