An efficient catalytic approach for the synthesis of substituted peroxides, alcohols, and ketones through a catalyst-controlledhighlyselective dioxygenation of olefins has been demonstrated. The reported methods are mild and practical, can be switched by the selection of different catalytic systems, and employ peroxide as an oxidant and a reagent at room temperature.
Selective C O bond formation: highly efficient radical dioxygenation of alkenes initiated by catalytic amount of tert-butyl hydroperoxide
作者:Xiao-Feng Xia、Su-Li Zhu、Qing-Tao Hu、Chao Chen
DOI:10.1016/j.tet.2016.10.029
日期:2016.12
A highlyselective radical dioxygenation of alkenes using hydroxamic acid and O2 with 5–10 mol % of tert-butyl hydroperoxide as a catalyst was developed. On the basis of this newly developed strategy, a wide range of phenylethanol derivatives with a variety of functional groups can be effectively synthesized.
Copper(I)-Catalyzed Oxidation of Alkenes Using Molecular Oxygen and Hydroxylamines: Synthesis and Reactivity of α-Oxygenated Ketones
作者:Alexander A. Andia、Matthew R. Miner、K. A. Woerpel
DOI:10.1021/acs.orglett.5b01120
日期:2015.6.5
The copper(I)-catalyzed oxidation of alkenes with molecularoxygen and N-hydroxyphthalimide (NHPI) or N-hydroxybenzotriazole (HOBt) provided α-oxygenated ketones. The reaction proceeded under a balloon of O2 at room temperature to furnish the dioxygenated products in 50–90% yield. These compounds, particularly the HOBt derivatives, can be further functionalized with phosphorus, nitrogen, and sulfur
A practical and simple selectfluor mediated highly selectiveradical dioxygenation of alkenes was achieved under mild conditions. Various hydroxylamines, such as N-Hydroxyphthalimide (NHPI), N-hydroxybenzotriazole (HOBt) and N-hydroxysuccinimide (NHSI), could react...
Cerium(IV) ammonium nitrate: Reagent for the versatile oxidative functionalization of styrenes using N-hydroxyphthalimide
作者:Igor B. Krylov、Stanislav A. Paveliev、Olesya K. Matveeva、Alexander O. Terent'ev
DOI:10.1016/j.tet.2019.03.030
日期:2019.4
Cerium(IV) ammonium nitrate was found to be a versatilereagent for the oxidative functionalization of styrenes using N-hydroxyphthalimide and iodine affording three different types of products with oxyphthalimide, nitrate and iodide groups. It was shown that reaction of styrenes with N-hydroxyphthalimide and cerium(IV) ammonium nitrate can be selectively directed to oxynitro-oxyphthalimides and dioxyphthalimides