AbstractA substrate‐controlled [4+1] annulation of sulfoxonium ylides with maleimides via Rh(III)‐catalyzed C−H bond activation is developed. The reaction of sulfoxonium ylides with 2‐methyl‐N‐arylmaleimides in the presence of AgNTf2 diastereoselectively provides diversely functionalized indanonylpyrroline‐2,5‐dione derivatives. Furthermore, in the presence of AgBF4, the subsequent reaction with maleimides leads to biologically intriguing various spiroindanonylpyrroline‐2,5‐diones. This methodology offers a broad substrate scope, good functional group tolerance, and diastereoselectivity.
摘要 通过Rh(III)催化的C-H键活化,开发了一种底物可控的[4+1]环化磺酰亚胺马来酰亚胺反应。在 AgNTf2 非对映选择性存在下,砜酰化物与 2-甲基-N-芳基马来酰亚胺的反应可提供多种官能化的茚并吡咯啉-2,5-二酮衍生物。此外,在 AgBF4 的存在下,与马来酰亚胺的后续反应还能产生各种具有生物意义的螺茚基吡咯啉-2,5-二酮。这种方法具有广泛的底物范围、良好的官能团耐受性和非对映选择性。