Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742 United States.
J Org Chem. 2020 Jul 17;85(14):8844-8850. doi: 10.1021/acs.joc.0c00686. Epub 2020 Jul 7.
The behavior of the ,-di(4-bromophenyl)nitrenium ion under acidic aqueous conditions was examined via laser flash photolysis experiments. A long-lived species forms and can be assigned as the cation radical or the dication. This species is unreactive toward nucleophiles and reactive toward strong electron donors, consistent with a cation radical. Mechanistic analysis indicates that its formation is through a separate pathway compared to that of the nitrenium ion, suggestive of a triplet mechanism.
通过激光闪光光解实验研究了 -二（4-溴苯基）硝鎓离子在酸性水条件下的行为。形成了一种长寿命的物种，可以将其分配为阳离子自由基或二阳离子。该物种与亲核试剂无反应，但与强电子给体反应，与阳离子自由基一致。机理分析表明，其形成途径与硝鎓离子不同，表明存在三重态机理。
