Radical-Mediated Diamination of Alkenes with Phenylhydrazine and Azodicarboxylates: Highly Diastereoselective Synthesis of<i>trans</i>-Diamines from Cycloalkenes
作者:Ming-Kui Zhu、Yu-Chen Chen、Teck-Peng Loh
DOI:10.1002/chem.201203832
日期:2013.4.22
Metal‐free synthesis: Diamination of alkenes by using phenylhydrazine and azodicarboxylates could be achieved in a one‐pot manner under very mild conditions (see scheme; Boc=tert‐butoxycarbonyl). This process works with the assistance of acetic acid by means of a radical mechanism and displays a high trans selectivity when cycloalkene substrates were used in the reaction.
不含金属的合成:在非常温和的条件下,可以通过单罐方式通过苯肼和偶氮二羧酸酯进行烯烃的胺化反应(参见方案; Boc =叔丁氧羰基)。该方法借助于自由基机理在乙酸的辅助下进行,并且当在反应中使用环烯烃底物时显示出高的反式选择性。