BF3·OEt2-Catalyzed Synthesis of anti-β-(N-Arylamino)-α-hydroxynitriles by Regio- and Diastereospecific Ring Opening of 3-Aryloxirane-2-carbonitriles with Anilines
作者:Chuangchuang Xu、Yang Lu、Kaini Xu、Jiaxi Xu
DOI:10.1055/s-0039-1690243
日期:2020.2
anti-β-(N-arylamino)-α-hydroxynitriles from 3-aryloxirane-2-carbonitriles and anilines was developed under the catalysis of BF3·OEt2 in ethanol. In this method, BF3·OEt2 first reacts with ethanol to produce the true catalyst of super acid H[B(OEt)F3], followed by an acid-catalyzed regio- and diastereospecific ring opening of oxirane-2-carbonitriles with anilines, generating anti-β-(N-arylamino)-α-hydroxynitriles
在乙醇中BF 3 ·OEt 2的催化作用下,开发了一种安全,方便的合成方法,用于从3-芳基环氧乙烷-2-甲腈和苯胺中合成抗β-(N-芳基氨基)-α-羟基腈。在这种方法中,BF 3 ·OEt 2首先与乙醇反应生成超酸H [B(OEt)F 3 ]的真正催化剂,然后酸催化环氧乙烷-2-甲腈的区域和非对映特异性开环,苯胺,生成抗-β-(N-芳基氨基)-α-羟基腈。该方法具有非金属催化,反应时间短,操作简便的优点,并使用了环境友好的溶剂。