An intermolecularanti-Markovnikovhydroamination of alkenes has been developed using triethyl phosphite and N-hydroxyphthalimide. The process tolerates a wide range of alkenes, including vinyl ethers, silanes, and sulfides as well as electronically unbiased terminal and internal alkenes. The resultant N-alkylphthalimides can readily be transformed to the corresponding primary amines. Mechanistic probes
Regioselective Radical Alkene Amination Strategies by Using Phosphite-Mediated Deoxygenation
作者:Samuel W. Lardy、Valerie A. Schmidt
DOI:10.1055/s-0037-1611911
日期:2019.11
frameworks is a highly sought-after goal. Presented here is a summary of recent efforts conducted by our group to develop radical-mediated amination strategies for the formal synthesis of primary amines from alkenes with exclusive anti-Markovnikov regioselectivity. We have found that N-hydroxyphthalimide is an effectivereagent capable of supplying both the N and H atoms for alkene hydroamination in
含氮化合物是所有化学学科的基本主题,这些框架的有效合成是一个备受追捧的目标。这里介绍的是我们小组最近为开发自由基介导的胺化策略而进行的工作的总结,该策略用于从具有独家抗马尔科夫尼科夫区域选择性的烯烃正式合成伯胺。我们发现 N-羟基邻苯二甲酰亚胺是一种有效的试剂,能够在基团转移自由基加成型机制中为烯烃加氢胺化提供 N 和 H 原子。此外,烯丙基氧邻苯二甲酰亚胺衍生物同样能够进行自由基基团转移并允许外部烯烃的氨基烯丙基化。
Stereospecific One-pot Synthesis of Enamides and Enimides by the Copper Iodide Promoted Vinylic Substitution
Enamides and enimides were prepared stereospecifically from vinyl bromides by direct vinylic substitution in the presence of copper salt in aprotic polar solvents.