Yb(OTf)3-Catalyzed Addition of 2-Methyl Azaarenes to Isatins via C-H Functionalization
作者:Rui NIU、Shiying YANG、Jian XIAO、Tao LIANG、Xingwei LI
DOI:10.1016/s1872-2067(11)60414-2
日期:2012.9
this key motif is of vital importance. Yb(OTf)3-catalyzed addition of 2- or 4-methyl azaarenes to isatins via C-H functionalization was developed. Moderate to good yields were obtained for various isatins and azaarenes. This method provides rapid protocol for the synthesis of biologically important azaarene-substituted 3-hydroxy-2-oxindoles in one step. The success of this reaction expands the synthetic
Facile Synthesis of Azaarene-Substituted 3-Hydroxy-2-oxindoles via Brønsted Acid Catalyzed sp<sup>3</sup> C–H Functionalization
作者:Rui Niu、Jian Xiao、Tao Liang、Xingwei Li
DOI:10.1021/ol2030982
日期:2012.2.3
Brønstedacidcatalyzedfunctionalization of sp3 C–H bonds in 2-methyl azaarenes has been achieved in the reaction with isatins. This method provides facile synthesis of biologically important azaarene-substituted 3-hydroxy-2-oxindoles in one step in moderate to good yields.