Urea–Hydrogen Peroxide Complex: A Selective Oxidant in the Synthesis of 2-Phenylselenyl-1,3-butadienes

  title={Urea–Hydrogen Peroxide Complex: A Selective Oxidant in the Synthesis of 2-Phenylselenyl-1,3-butadienes},
  author={Lei Yu and Bo Meng and Xian Huang},
  journal={Synthetic Communications},
  pages={3142 - 3150}
Abstract 2-Phenylselenyl-1,3-butadienes were synthesized via the selective oxidation of 2,4-diphenylselenyl-1-butenes with urea–hydrogen peroxide followed by the selenoxide elimination. 
Rhodium(II)-Catalyzed Isomerization of Cyclopropenylmethyl Esters into (Acyloxymethylene)cyclopropanes.
In the presence of a rhodium(II) catalyst, 3,3-disubstituted cyclopropenylmethyl esters that possess an electron-rich or neutral aromatic group undergo isomerization into (acyloxymethylene)cyclopropanes and contain an enol ester group that can be subsequently functionalized to access stereodefined arylcyclopropane.
Poly(N-vinylpyrrolidone)–H2O2 and poly(4-vinylpyridine)–H2O2 complexes: solid H2O2 equivalents for selective oxidation of sulfides to sulfoxides and ketones to gem-dihydroperoxides
Complexes of poly(N-vinylpyrrolidone) (PVD) and poly(4-vinylpyridine) (PVP) with hydrogen peroxide have been prepared and their synthetic utility as solid H2O2 equivalents for the selective oxidation
Stability of carbamide peroxide in gel formulation as prepared in Brazilian compounding pharmacies
SUMMARY Carbamide peroxide (CP) is a widely used tooth blea ching agent in Brazil. Although commercially availa ble, CP is commonly synthesized in Brazilian compounding pharmacies to reduce costs.
Recent Advances on the Preparation and Reactivity of Methylenecyclopropanes
Introduction .......................................................................................210 I. Preparation of


Copper(II) Acetate Mediated Reactions of Methylenecyclopropane and Diphenyl Diselenide
Phenylselenyl-substituted cyclobutenes and 1,3-butadienes were obtained from a copper(II) acetate mediated reaction between methylenecyclopropanes and diphenyl diselenide.
Ring-opening reactions of methylenecyclopropanes with diphenyl diselenide upon heating; formation of 3-phenylselenyl-2,5-dihydrofuran derivatives.
The reactions of methylenecyclopropanes with diphenyl diselenide give ring-opened products in good yields at 150 [degree]C under nitrogen atmosphere for 3 h; a plausible reaction mechanism has been proposed.
Palladium-catalyzed isomerization of methylenecyclopropanes in acetic acid.
[reaction: see text] Pd(PPh3)4-catalyzed isomerization of MCPs 1 in acetic acid proceeds smoothly at 80 degrees C in toluene to give the corresponding 1-substituted or 1,1-disubstituted dienes 2 in
Competition between hetero-Diels-Alder and cheletropic additions of sulfur dioxide to 2-substituted buta-1,3-dienes. Synthesis of 2-(1-naphthyl)and 2-(2-naphthyl)buta-1,3-diene
Chloroprene (= 2-chlorobuta-1,3-diene; 4b) and electron-rich dienes such as 2-methoxy-(4c), 2-acetoxy(dd), and 2-(phenylseleno)buta-1,3-diene (4e) refused to equilibrate with the corresponding
Urea-Hydrogen Peroxide Complex
Organoselenium chemistry : a practical approach
Preface 1. Organoselenium chemistry: an overview 2. Selenoxide eliminations 3. Addition of Electrophilic Organoselenium Reagents to Carbon-Carbon Double Bonds 4. Reactions of selenium nucleophiles 5.