Stereoselective Synthesis of β-Amino Ketones via Direct Mannich-Type Reactions, Catalyzed with ZrOCl2·8H2O under Solvent-Free Conditions
作者:Bagher Eftekhari-Sis、Amir Abdollahifar、Mohammed M. Hashemi、Maryam Zirak
DOI:10.1002/ejoc.200600493
日期:2006.11
zirconium oxychloride (ZrOCl2·8H2O) efficiently catalyzes the direct Mannich-type reaction of a variety of in situ generated aldimines using aldehydes and anilines with ketones in a three-component reaction under solvent-free conditions. The reaction proceeds rapidly and affords the corresponding β-amino ketones in good to high yields with good to excellent stereoselectivities. The catalyst can be recycled
在室温下,氧氯化锆 (ZrOCl2·8H2O) 在无溶剂条件下,使用醛和苯胺与酮在三组分反应中有效地催化各种原位生成的醛亚胺的直接曼尼希型反应。反应进行得很快,并以良好到高产率提供相应的 β-氨基酮,并具有良好到极好的立体选择性。催化剂可以循环用于后续反应而不会显着降低效率。 (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)