Oxidative addition of N-aminophthalimide to 3,4-dihydro-2H-thiopyrans, their S-oxides, and S,S-dioxides
作者:Ekaterina A. Merkulova、Aleksey V. Kolobov、Mikhail A. Kuznetsov、Dar'ya V. Spiridonova、Alena S. Pankova
DOI:10.1016/j.tetlet.2022.153715
日期:2022.3
an under conditions of oxidative aminoaziridination. A unique structure with 2-thia-7-azabicyclo[4.1.0]heptane-2,2-dioxide core was obtained via addition of nitrene to the CC bond of thiopyran S,S-dioxide. For an unoxidized thiopyran, only en(phthaloyl)hydrazine resulted after cleavage of the initially formed aziridine. S-Oxide trapped the nitrene by the sulfur atom to form the sulfoximine leaving
将氮烯加成到 C C S片段的选择性取决于硫原子的氧化状态,如在氧化氨基氮丙啶化条件下 3,4-二氢-2 H-噻喃的各种衍生物的例子。通过将氮烯加成到噻喃S , S-二氧化物的 C C 键上,获得了具有 2-thia-7-azabicyclo[4.1.0]heptane-2,2-dioxide 核心的独特结构。对于未氧化的噻喃,在最初形成的氮丙啶裂解后仅产生对苯二甲酰肼。S -Oxide 通过硫原子捕获氮烯以形成亚砜亚胺,而双键不受影响。