作者:Derek A. Leas、Yuxiang Dong、Jered C. Garrison、Xiaofang Wang、Edward L. Ezell、Douglas E. Stack、Jonathan L. Vennerstrom
DOI:10.1021/acs.joc.9b03402
日期:2020.2.21
periodate oxidative ring expansion in the presence of formaldehyde and other aldehydes to form 5,6-dihydro-7H-1,4-methanobenzo[e][1,4]diazonine-2,7(3H)-diones in 30-81% yield. In most cases, the reaction to form this new 6/8/5-tricyclic ring system proceeds with high diastereoselectivity. These benzannulated medium-ring keto imidazolidin-4-ones expand the menu of tetrahydro-β-carboline oxidation products
1-取代的1,1-二取代的四氢-β-咔啉在甲醛和其他醛的存在下经历高碘酸钠的氧化环膨胀,从而形成5,6-二氢-7H-1,4-甲基苯并[e] [1,4] ] diazonine-2,7(3H)-二酮,收率30-81%。在大多数情况下,形成这种新的6/8 / 5-三环系统的反应具有很高的非对映选择性。这些苯环中环酮基咪唑啉丁-4-酮扩展了四氢-β-咔啉氧化产物的范围。