simplicity: Easily available imidazole-based substrates were coupled with β-aryl enals via eliminative [4+2] cycloaddition under mild aminocatalytic conditions to access rare chiral [d]-fused imidazole ring systems with optimal enantio- and regioselectivity and good potential for post-cycloaddition functional group editing.
简单性的挑战:在温和的
氨基催化条件下,通过消除[4+2]环加成反应,将易于获得的
咪唑基底物与β-芳基烯醛偶联,获得具有最佳对映选择性和区域选择性的稀有手性[d]-稠合
咪唑环系统,并且环加成后官能团编辑的良好潜力。