Synthesis of α-Hydrazino Ketones via Regio- and Stereoselective Electrophilic Amination of Manganese Enolates and Enamines
作者:Gabriella Dessole、Luca Bernardi、Bianca F. Bonini、Elena Capitò、Mariafrancesca Fochi、Raquel P. Herrera、Alfredo Ricci、Gérard Cahiez
DOI:10.1021/jo049152t
日期:2004.11.1
synthesis of α-hydrazino ketones is described. Manganese enolates and manganese enamines derived from ketones and from the corresponding N-sulfinylimines react with azodicarboxylate esters (DTBAD and DEAD) in a regioselective fashion to afford in good to excellent yields the kinetic α-hydrazino ketones as sole or highly prevalent products. When enantiopure N-sulfinyl manganese enamines were used the stereoselectivity
描述了用于α-肼基酮的区域和立体选择性合成的直接方法。衍生自酮和相应的N-亚磺酰亚胺的锰烯醇盐和锰烯胺与偶氮二羧酸酯(DTBAD和DEAD)以区域选择性方式反应,以高至极佳的产率提供单独或高度流行的动力学α-肼基酮。当使用对映体纯的N-亚磺酰基锰烯胺时,这些反应的立体选择性范围为ee的40%至68%。