34879-84-0Relevant academic research and scientific papers
Direct N-Alkylation and Kemp Elimination Reactions of 1-Sulfonyl-1H-Indazoles
Tang, Meng,Chu, Bingjie,Chang, Xiaowei
, p. 2109 - 2116 (2018/07/31)
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 method was successfully applied to the total syntheses of quindolinone and cryptolepinone; quindolinone was prepared in a one-pot reaction from 1-sulfonyl-1H-indazole.
