Highly enantioselective Michael/cyclization tandem reaction between dimedone and isatylidene malononitriles
作者:Jia-Long Hu、Feng Sha、Qiong Li、Xin-Yan Wu
DOI:10.1016/j.tet.2018.10.029
日期:2018.12
A highly enantioselective Michael/cyclization tandem reaction between dimedone and isatylidene malononitriles has been developed. With 5 mol% of bifunctional organocatalyst C15, chiral spiro[2-amino-4H-pyran-oxindole] derivatives were obtained in excellent yields (97–99%) with excellent enantioselectivities (up to > 99% ee).
已开发了二甲酮与异亚丙基丙二腈之间的高度对映选择性迈克尔/环化串联反应。用5 mol%的双官能有机催化剂C15,可以以优异的收率(97-99%)和出色的对映选择性(高达> 99%ee)获得手性螺[2-氨基-4 H-吡喃-羟吲哚]衍生物。