Pd(II)-Catalyzed Asymmetric Oxidative Annulation of <i>N</i>-Alkoxyheteroaryl Amides and 1,3-Dienes
作者:Tao Zhang、Hong-Cheng Shen、Jia-Cheng Xu、Tao Fan、Zhi-Yong Han、Liu-Zhu Gong
DOI:10.1021/acs.orglett.9b00216
日期:2019.4.5
The first Pd(II)-catalyzed asymmetric oxidative annulation of N-alkoxyaryl amides and 1,3-dienes is reported, which features particular applicability for quick assembly of different types of chiral heterocycles with high yields and enantioselectivities. A novel chiral pyridine-oxazoline bearing a methoxyl group at the C-5 position and a gem-dimethyl group on the oxazoline moiety was found to be crucial
报道了第一个Pd(II)催化的N-烷氧基芳基酰胺和1,3-二烯的不对称氧化环化反应,它特别适用于快速组装具有高收率和对映选择性的不同类型的手性杂环。发现在C-5位带有甲氧基的新型手性吡啶-恶唑啉和在恶唑啉部分上的宝石-二甲基对转化至关重要。