Copper‐Catalyzed Oxidative Benzylic C(sp
<sup>3</sup>
)−H Cyclization for the Synthesis of β‐Lactams
作者:Kanako Nozawa‐Kumada、Satoshi Saga、Yuta Matsuzawa、Masahito Hayashi、Masanori Shigeno、Yoshinori Kondo
DOI:10.1002/chem.201905777
日期:2020.4.6
oxidative C(sp 3 )-H amidation for the synthesis of β -lactams using t BuOO t Bu. This method is based on Kharasch-Sosnovsky amidation and does not require prefunctionalization of C(sp 3 )-H bonds or the installation of a directing group, thereby allowing for the straightforward synthesis of β -lactams. Our intramolecular functionalization protocol can be extended to diverse benzylic C(sp 3 )-H bonds and
β-内酰胺由于在天然产物和药物中普遍存在而成为重要的结构基序。我们在此报告了使用t BuOO t Bu合成β-内酰胺的Cu催化的分子内氧化C(sp 3)-H酰胺化反应。该方法基于Kharasch-Sosnovsky酰胺化,不需要C(sp 3)-H键的预功能化或定向基团的安装,从而可以直接合成β-内酰胺。我们的分子内功能化协议可以扩展到各种苄基C(sp 3)-H键,并显示出色的官能团耐受性。