Cobalt-catalyzed ring-opening addition of azabenzonorbornadienes <i>via</i> C(sp<sup>3</sup>)–H bond activation of 8-methylquinoline
作者:Heng Tan、Ruhima Khan、Dandan Xu、Yongyun Zhou、Xuexin Zhang、Guangrui Shi、Baomin Fan
DOI:10.1039/d0cc05374k
日期:——
The first ring-opening addition of a benzylic C(sp3)–H bond to azabenzonorbornadienes is demonstrated.
第一个苄基C(sp3)-H键向氮杂苯并[2.2.1]环庚二烯的环开合加成被证明了。
Copper-Catalyzed Hydroamination of Oxa- and Azabenzonorbornadienes with Pyrazoles
作者:Kundo Kim、Yunmi Lee
DOI:10.1021/acs.joc.1c02576
日期:2022.1.7
An efficient and highly chemo- and stereoselective copper-catalyzed hydroamination of oxa- and azabenzonorbornadienes with various pyrazole derivatives is described. This catalytic process is promoted by the presence of N-heterocyclic carbene ligands and KOt-Bu under mild and simple reaction conditions, and allows for the direct synthesis of new and versatile functionalized oxa(aza)benzonorbornyl pyrazoles
描述了一种有效且高度化学选择性和立体选择性的铜催化的氧杂和氮杂苯并降冰片二烯与各种吡唑衍生物的加氢胺化。N-杂环卡宾配体和 KO t -Bu 在温和和简单的反应条件下促进了这一催化过程,并允许从容易获得的氧杂(氮杂)直接合成新的多功能官能化氧杂(氮杂)苯并降冰片基吡唑。 )双环烯烃。该方法的合成效用通过将所得产物转化为吡唑基取代的萘来证明。
Palladium/Copper Complexes Co-Catalyzed Highly Enantioselective Ring Opening Reaction of Azabenzonorbornadienes with Terminal Alkynes
AbstractA chiral palladium/copper (Pd/Cu) co‐catalytic system which could enable asymmetric ring opening reaction of azabenzonorbornadienes with terminal alkynes is reported. This system comprises palladium(II) acetate [Pd(OAc)2]/(R)‐xyl‐Binap and copper(I) triflate (CuOTf). A good substrate scope was found, with excellent enantioselective outcomes (up to >99.9 % ee). A reaction mechanism involving two metal complexes is also proposed.magnified image
Rhodium-catalyzed ring-opening reactions of heterobicyclic alkenes with heteroarene nucleophiles