Visible Light‐Mediated Synthesis of Enantiopure γ‐Cyclobutane Amino and 3‐(Aminomethyl)‐5‐phenylpentanoic Acids
作者:Sabine Kerres、Eva Plut、Simon Malcherek、Julia Rehbein、Oliver Reiser
DOI:10.1002/adsc.201801413
日期:2019.3.15
Density functional theory calculations shed light on the conformational prerequisites for the [2+2] photocycloaddition. The bicyclic key structures could be readily transformed into γ‐cyclobutane amino acids.
可见光介导的[2 + 2]使用的[Ir(DTB-联吡啶)(DF(CF酰胺连接的二烯的光环3)PPY)2 ] PF 6作为三重态敏化剂施加到生成各种ñ -叔-丁基,ñ苄基和ñ -叔丁氧羰基保护的3-氮杂双环[3.2.0]庚烷-2-酮以良好的收率和良好的非对映选择性。密度泛函理论计算为[2 + 2]光环加成反应的构象先决条件提供了启示。双环键结构很容易转化为γ-环丁烷氨基酸。