Water‐Promoted Palladium‐Catalyzed Asymmetric Ring‐Opening of Oxabenzonorbornadienes with Alkoxysilanes
作者:Yun Tan、Yongqi Yao、Wen Yang、Qifu Lin、Guobao Huang、Minxiong Tan、Shuqi Chen、Donghan Chen、Dingqiao Yang
DOI:10.1002/adsc.201901152
日期:2020.1.7
Water‐promoted palladium‐catalyzed asymmetric ring‐opening (ARO) reaction of oxabenzonorbornadienes with a wide variety of alkoxysilanes has been developed in a one‐pot fashion, yielding cis‐1,2‐dihydronaphthalen‐1‐ols in favourable yields (up to 98%) with gratifying enantioselectivities (up to 98% ee) under mild conditions. To the best of our knowledge, it represents the first example in the ring‐opening
以单锅法开发了水促进的钯催化的草酰苯并降冰片二烯与多种烷氧基硅烷的不对称开环(ARO)反应,可产生有利的收率的顺式1,2-二氢萘-1-醇在温和条件下具有令人满意的对映选择性(最高98%ee)的98%)。据我们所知,它是氧杂双环烯烃与烷氧基硅烷开环反应的第一个例子。此外,通过X射线衍射分析确定了产物的顺式1,2-构型,并提出了目前催化开环反应的可能机理。