Controlled Synthesis of Enantioselective 1-Aminoindenes via Cobalt-Catalyzed [3 + 2] Annulation Reaction
作者:Min-Hsien Chen、Jen-Chieh Hsieh、Yi-Hsien Lee、Chien-Hong Cheng
DOI:10.1021/acscatal.8b02566
日期:2018.10.5
A cobalt-catalyzed synthesis of 1-aminoindenes via enantioselective [3 + 2] annulation is described. In this reaction, the desired products can be selectively prepared in either (R)- or (S)-form by the ligand-controlled synthesis, which is initiated by the cleavage of C–B, C–Br, or C–O bonds under very mild reaction conditions. In addition, this enantioselective cobalt catalysis provides high regioselectivity
描述了通过对映选择性[3 + 2]环合反应的钴催化的1-氨基茚的合成。在该反应中,所需的产物可以通过配体控制的合成选择性地以(R)或(S)形式制备,该合成是通过C–B,C–Br或C–O键的断裂而引发的在非常温和的反应条件下 另外,这种对映选择性的钴催化作用为内部和末端炔烃提供了高区域选择性,并且通常以高收率和ee值提供产物。