Highly Enantioselective Michael Addition of Malononitrile to Vinylogous Imine Intermediates Generated in situ from Arylsulfonyl Indoles
作者:Linhai Jing、Jiangtao Wei、Li Zhou、Zhiyong Huang、Zhengkai Li、Di Wu、Haifeng Xiang、Xiangge Zhou
DOI:10.1002/chem.201001662
日期:——
Malononitrile on rare form: Highly enantioselective Michael addition of malononitrile to vinylogous imine intermediates 2, generated in situ from arylsulfonyl indoles 1, is described (see scheme). This protocol provides easy and convenient access to valuable 3‐indolyl derivatives 3 in high yields and enantioselectivities. A possible catalytic mechanism is proposed.
稀有形式的丙二腈:描述了由芳基磺酰基吲哚1原位生成的乙烯对亚胺基中间体2高度对映选择性迈克尔将丙二腈加成(见方案)。该协议可轻松,便捷地以高收率和对映选择性获得有价值的3-吲哚基衍生物3。提出了一种可能的催化机理。