Structure-selectivity relationship in the cleavage of spirocyclopropyl oxindoles: An experimental and theoretical investigation
作者:J. Benjamín García-Vázquez、Angel E. Bañuelos-Hernández、Joel J. Trujillo-Serrato、Oscar R. Suárez-Castillo、Armando Ariza-Castolo、Martha S. Morales-Ríos
DOI:10.1016/j.molstruc.2017.05.099
日期:2017.10
ring-opened 2-oxohomotryptamines accompanied by the ring-retained spirocyclopropyl acetamides as by products. The C3 C9 bond fission would be induced by H atom attack via the plausible intermediacy of a stabilized benzolactam carbon-centered radical. The substituent effects on the stability of such radicals were analyzed in terms of the energy of SOMO orbitals, showing good agreement with σm Hammett
摘要 在乙酸酐中对紧张的腈取代的螺环丙基羟吲哚进行多相催化加氢,可以区域选择性地形成开环的 2-氧代高色胺,并伴随着作为副产物的保留环的螺环丙基乙酰胺。C3 C9 键裂变将通过稳定的苯内酰胺碳中心自由基的合理中介由 H 原子攻击诱导。根据 SOMO 轨道的能量分析了取代基对此类自由基稳定性的影响,显示出与 σm Hammett 常数的良好一致性。理论结果反映了对所分析化合物反应性的实验结果。