Dearomative [4+2] Cycloaddition of Oxindole‐Embedded<i>ortho</i>‐Quinone Methides with 2,5‐Dialkylfurans
作者:Yao‐Bin Shen、Shuai‐Shuai Li、Xicheng Liu、Liping Yu、Qing Liu、Jian Xiao
DOI:10.1002/adsc.201801509
日期:2019.3.15
2,5‐Dialkylfurans were facilely converted to pharmaceutically significant spiro[chroman‐4,3′‐oxindole] scaffolds via an organocatalytic dearomative [4+2] cycloaddition with oxindole‐embedded ortho‐quinone methides. This method featured mild reaction conditions, simple operation, good yields, and excellent diastereoselectivities.
2,5-二烷基呋喃通过有机催化脱芳香性[4 + 2]环加成并掺入羟吲哚嵌入的邻苯二甲酰甲烷,轻松地转变为具有药学意义的螺[chroman-4,3'-oxindole]支架。该方法具有反应条件温和,操作简单,收率高和非对映选择性优良的特点。