Oxidative C–O coupling as a new idea in the ‘click-like chemistry’: malonyl peroxides for the conjugation of two molecules
作者:Vera A. Vil’、Evgenii S. Gorlov、Oleg V. Bityukov、Igor B. Krylov、Gennady I. Nikishin、Kasimir K. Pivnitsky、Alexander O. Terent’ev
DOI:10.1016/j.mencom.2019.03.003
日期:2019.3
Malonylperoxides were used for the one-pot construction of hybrid structures by conjugation of heterocycle (3H-pyrazol-3-one, isoxazol-5(2H)-one, pyrazolidine-3,5-dione, or barbituric acid) and amine or alcohol. The first stage represents oxidative C–O coupling with liberation of the carboxyl group which is functionalized at the second stage thus affording ‘clicklike’ products with malonic linker
Selective Reduction of the Exocyclic Double Bond of Isoxazolones and Pyrazolones by Hantzsch 1,4-Dihydropyridine
作者:Wei Yu、Zhengang Liu、Bing Han、Qiang Liu、Wei Zhang、Li Yang、Zhong-Li Liu
DOI:10.1055/s-2005-869860
日期:——
Hantzsch 1,4-dihydropyridine (HEH) was used to realize the selective reduction of the exocyclic double bond of 4-arylmethylene- and 4-alkylidene-4H-isoxazol-5-ones and 4-arylmethylene-4H-pyrazol-5-ones.