Side reaction of styrene with naocl

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    Previous Article Next Article. Nally, Tetrahedron Lett. Loose, B. Neumann, M. From the journal: New Journal of Chemistry. Hoegaerts, B. In case of aromatic olefins apart from the desired epoxidation reaction small amounts of halogenation of the aromatic nucleus can be observed. Sheldon, Top. Buchbauer, Tetrahedron Lett.

  • epoxides easy , Hive Novel Discourse

  • A drawback of this method are potential side reactions of the acid. Hence, the Table 1 - Epoxidation of alpha-methylstyrene using the NaOCl/KBr system. 1 Reaction profiles of the styrene epoxidation with NaOCl catalysed by Mn(iii). on oxomanganese(v)-salen complexes suggest that a side-on approach of the.

    At high chlorite ion concentrations, HOCl is rapidly eliminated by reaction with chlorite, minimizing side reactions between HOCl and Cl2 with.
    For Librarians. Oxidation reactions of olefins to give epoxides are of major importance for organic synthesis. In order to get more information about the mechanism, we studied the concentration-time dependence of the olefin and reaction products via GC.

    If you are the author of this article you still need to obtain permission to reproduce the whole article in a third party publication with the exception of reproduction of the whole article in a thesis or dissertation. Open Access. Although in situ generated hypochlorite is still used in the two-step commercial process for propylene epoxide Scheme 1 5comparably few studies described the direct epoxidation of non-activated olefins with hypochlorite without metals being present 6.

    epoxides easy , Hive Novel Discourse

    images side reaction of styrene with naocl
    Side reaction of styrene with naocl
    Indeed, upon addition of 1. Beller, Angew.

    Cited by. We thought that the in situ generation of the more active hypobromide will increase the epoxide yield. Rautenstrauch, A. In summary, we have shown that various non-activated olefins can be converted to epoxides by using simply sodium hypochlorite and bromide salt.

    Further tests proved that dioxane itself reacts with aqueous hypochlorite at an appreciable rate.

    This is evidence that alkali-consuming side reactions were. one atom per four vinylbenzoic acid units) and the % styrene units re- maining.

    A drawback of this method are potential side reactions of the acid. Table 1 - Epoxidation of alpha-methylstyrene using the NaOCl/KBr system.

    Video: Side reaction of styrene with naocl Making Bleach (Sodium Hypochlorite) from Table Salt (Sodium Chloride)

    for epoxidation of (E)-stilbene and styrene using PhIO and NaOCl as terminal oxidants in four different solvents. The catalytic research The epoxidation reaction of olefins can be . formation of side-products such as benzaldehyde and.
    After studying the available literature we were surprised that the direct epoxidation of non-activate dolefins using sodium hypochlorite as oxidant has not been examined in more detail. Freire and B. For Members. A drawback of this method are potential side reactions of the acid.

    However, when NaOCl is used, the observed behaviour is the opposite: electron donating groups make the complexes better catalysts. References Selected reviews: E. Krebs, J.

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    images side reaction of styrene with naocl

    Article type: Paper. Ostovic, T. Jump to site search. Khenkin, R.

    However, this reaction leads to many side products and additional reactions meaning Scheme 2 Reactions occurring in the production of NaOCl.1 . ( styrene, cyclic olefins, or aliphatic alkenes) with Mn(TPP)Cl or Mn(TMP)Cl (where TPP. Structural effects on the NaOCl epoxidation of styrene in micellar media catalysed by amphiphilised Mn(III).

    Video: Side reaction of styrene with naocl Chemical reaction (NaOCl Vs HCl)

    Reactions in Micellar Systems.
    For Members. While investigating the oxidation of alpha-methylstyrene in the presence of different metal catalysts and sodium hypochlorite, we discovered that epoxidation to 2-phenylepoxypropane proceeds as a side-reaction independent from the metal catalyst used Scheme 2.

    Something went wrong. Hamilton, J.

    images side reaction of styrene with naocl

    Although in situ generated hypochlorite is still used in the two-step commercial process for propylene epoxide Scheme 1 5comparably few studies described the direct epoxidation of non-activated olefins with hypochlorite without metals being present 6. Search Advanced.

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    Archive Journals. Rautenstrauch, A.

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    4 Replies to “Side reaction of styrene with naocl”

    1. In order to get more information about the mechanism, we studied the concentration-time dependence of the olefin and reaction products via GC.

    2. Experimental General Information All reactions were carried out without any special precautions under an atmosphere of air.