Direct N-Alkylation and Kemp Elimination Reactions of 1-Sulfonyl-1<i>H</i>
-Indazoles
作者:Meng Tang、Bingjie Chu、Xiaowei Chang
DOI:10.1002/asia.201800741
日期:2018.8.16
The reactions of 1‐sulfonyl‐1H‐indazoles under basic conditions are discussed, and the direct N‐alkylation and Kemp elimination reactions of these compounds are reported. A series of 2‐(p‐tosylamino)benzonitriles and N‐alkyl indazoles were prepared in good yields. Moreover, the 2‐(p‐tosylamino)benzonitriles could be transformed into a diverse range of important derivatives in a one‐pot reaction. This
讨论了在碱性条件下1-磺酰基-1 H-吲唑的反应,并报道了这些化合物的直接N-烷基化和Kemp消除反应。制备了一系列2-(对甲苯磺酰基氨基)苄腈和N-烷基吲唑,收率很高。此外,在一次反应中,2-(对甲苯磺酰基氨基)苯甲腈可转变为多种重要的衍生物。该方法已成功地应用于喹啉酮和隐烯酮的合成。喹啉酮是通过1-磺酰基-1 H-吲唑单锅反应制得的。