Reactivity Pattern of Bis(propargyloxy) Disulfides: Tandem Rearrangements and Cyclizations
作者:Samuel Braverman、Tatiana Pechenick-Azizi、Hugo Gottlieb、Milon Sprecher
DOI:10.1055/s-0030-1260024
日期:2011.6
pattern of the reactant. Inter alia they undergo surprising tandem sigmatropic rearrangements and cycloadditions. Three heretofore unknown product types were isolated and fully characterized: 6,7-dithiabicyclo[3.1.1]heptan-2-one 6-oxide derivatives, two isomeric 1,2-dithiete 1,1-dioxides (α,β-unsaturated four-membered cyclic thiosulfonates) from bis(propargyloxy) disulfides with α- or γ-alkyl-substituted
成功制备了35个取代的双(炔丙基氧基)二硫化物,收率好至极好,发现它们的反应性强烈依赖于反应物的取代方式。它们尤其经历令人惊讶的串联σ重排和环加成。分离出三种迄今未知的产物类型,并对其进行了全面表征:6,7-二硫代双环[3.1.1]庚烷-2-一6-氧化物衍生物,两种同分异构的1,2-二硫代1,1-二氧化物(α,β-不饱和四双(炔丙基氧基)二硫化物带有α-或γ-烷基取代的炔丙基的二元环硫代磺酸盐,和双(炔丙基氧基)二硫化物的两个异构体2-氧杂5,7-二硫杂双环[2.2.1]庚烷5-氧化物具有α-叔丁基-或α,α-二烷基取代的炔丙基。 σ重排-环加成-取代基的效果-双(炔丙氧基)二硫化物- dithiabicyclic结构-有机硫化学-硫代磺酸酯- VIC -disulfoxides