From Simple Ugi Adducts to Indanes and δ-Amidomalonates: New Manganese(III)-Induced Radical Cascades
作者:Laurent El Kaim、Laurence Grimaud、Emilie Vieu
DOI:10.1021/ol701678d
日期:2007.10.1
A complete change of the traditional Ugi adducts framework has been obtained using new radical cascades as Ugi post-condensation reactions. Indanes and delta-amidomalonates were thus obtained in a one-pot procedure from aromatic aldehydes under a sequence involving Ugi addition followed by treatment of the adducts with Mn(III) and malonate or beta-ketoester. The radical step probably involves an intramolecular
使用新的自由基级联作为Ugi的缩合后反应已获得了对传统Ugi加合物构架的完全改变。因此,通过一锅法从芳族醛以一锅法获得茚满和δ-氨基天冬氨酸,其顺序涉及Ugi加成,然后用Mn(III)和丙二酸酯或β-酮酸酯处理加合物。自由基步骤可能涉及分子内芳基转移,然后氧化裂解并最终环化成茚满。