Synthesis of 9,10-Phenanthrenes via Palladium-Catalyzed Aryne Annulation by <i>o</i>-Halostyrenes and Formal Synthesis of (±)-Tylophorine
作者:Tuanli Yao、Haiming Zhang、Yanna Zhao
DOI:10.1021/acs.orglett.6b00558
日期:2016.6.3
A novel palladium-catalyzed annulation reaction of in situ generated arynes and o-halostyrenes has been developed. This methodology affords moderate to excellent yields of substituted phenanthrenes and is tolerant of a variety of functional groups such as nitrile, ester, amide, and ketone. This annulation chemistry has been successfully applied to the formal total synthesis of a biologically active
已经开发了新颖的钯催化的原位生成的芳烃和邻卤代苯乙烯的环化反应。该方法可提供中等至极高的取代菲收率,并且可耐受各种官能团,例如腈,酯,酰胺和酮。该环状化学方法已成功应用于生物活性生物碱(±)-酪氨酸的正式全合成。