Synthesis of Optically Pure 3,3′-Diaryl Binaphthyl Disulfonic Acids <i>via</i> Stepwise N–S Bond Cleavage
作者:Manabu Hatano、Takuya Ozaki、Keisuke Nishikawa、Kazuaki Ishihara
DOI:10.1021/jo401848z
日期:2013.10.18
We developed a practical synthesis of optically pure 3,3′-diaryl-1,1′-binaphthyl-2,2′-disulfonic acids (i.e., (R)- or (S)-3,3′-Ar2-BINSAs) from the parent chiral sulfonimides via stepwise N–S bond cleavage of the sulfonimides and the resultant sulfonamides. This unusual synthesis, which provides arylsulfonic acids from arylsulfonamides, is valuable since common methods particularly give amines with
我们开发了一种光学纯的3,3'-二芳基-1,1'-联萘-2,2'-二磺酸(即(R)-或(S)-3,3'-Ar 2 -BINSAs的实用合成方法)从母体手性磺酰亚胺通过逐步的N-S键裂解磺酰亚胺和生成的磺酰胺。这种不寻常的合成方法由芳基磺酰胺提供芳基磺酸,是有价值的,因为常规方法特别是在脱保护过程中使胺基团与砜基团分解。