Intramolecular Nickel-Catalyzed Ring-Opening Reactions of Oxabenzonorbornadienes with C<sub>1</sub>
-Tethered Aryl Halides: An Improvement of Method
作者:Samuel Koh、Austin Pounder、Elizabeth Brown、William Tam
DOI:10.1002/ejoc.202000672
日期:2020.8.9
Oxabenzonorbornadienes with C1‐tethered aryl halides were found to rapidly undergo a ring‐opening reaction in the presence of NiCl2(PPh3)2, Zn, and MeCN to selectively form 1,2‐dihydronaphthalen‐1‐ol cores. 17 examples are shown with varying oxabenzonorbornadiene and iodoarene substitution, tether length, and halides, with yields up to 99 %.
Cobalt‐Catalyzed Hydrogenation and Deuteration Reactions of Bicyclic Alkenes in an Aqueous Environment
作者:Austin Pounder、Joshua van der Zalm、Aicheng Chen、William Tam
DOI:10.1002/ejoc.202301306
日期:2024.3.18
This study presents cobalt-catalyzed hydrogenation and deuteration of bicyclic alkenes, utilizing H2O and D2O as hydrogen sources with Zn0 or Mn0 reductants. Lewis-acid co-catalysts facilitated reactions and promoted transesterification. Introduction of 1 atm of H2 allowed catalytic metal reductant loading. These processes displayed excellent functional-group tolerance, consistently yielding high-product
本研究提出了钴催化双环烯烃的氢化和氘化,利用H 2 O 和D 2 O 作为氢源以及Zn 0或Mn 0还原剂。路易斯酸助催化剂促进反应并促进酯交换反应。引入1atm的H 2允许负载催化金属还原剂。这些工艺表现出优异的官能团耐受性,始终保持高产品产量。