4-Methylmorpholin-4-oxidmonohydrat

Gefahreninformationscode (GHS)

• Bildanzeige (GHS)

  

• Alarmwort

  Achtung

• Gefahrenhinweise

  H228：Entzündbarer Feststoff.

  H272：Kann Brand verstärken; Oxidationsmittel.

• Sicherheit

  P202：Vor Gebrauch alle Sicherheitshinweise lesen und verstehen.

  P210：Von Hitze, heißen Oberflächen, Funken, offenen Flammen und anderen Zündquellenarten fernhalten. Nicht rauchen.

  P220：Von Kleidung und anderen brennbaren Materialien fernhalten.

  P240：Behälter und zu befüllende Anlage erden.

  P241：Explosionsgeschützte [elektrische/Lüftungs-/ Beleuchtungs-/...] Geräte verwenden.

  P308+P313：BEI Exposition oder falls betroffen: Ärztlichen Rat einholen/ärztliche Hilfe hinzuziehen.

4-Methylmorpholine N-oxide Chemische Eigenschaften,Einsatz,Produktion Methoden

• R-Sätze Betriebsanweisung:

  R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.

• S-Sätze Betriebsanweisung:

  S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
  S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.

• Chemische Eigenschaften

  Clear colorless to yellow solution

• Verwenden

  Non-metallic catalyst for the cyanosilylation of ketones. Co-oxidant for Sharpless asymmetric dihydroxylation in ionic liquids.

• Verwenden

  4-Methylmorpholine N-oxide acts as a non-metallic catalyst for the cyanosilylation of ketones. It is also employed as a co-oxidant for Sharpless asymmetric dihydroxylation in ionic liquids. It serves as a solvent in the Lyocell process to produce tencel fiber. Further, it is used in the preparation of aldehydes from primary alcohols in the presence of tetrapropylammonium perruthenate.

• Verwenden

  4-Methylmorpholine N-Oxide is a metabolite of Morpholine (M723725). N-Methylmorpholine N-Oxide is commonly used to dissolve cellulose as well as in the dissolution of of scleroproteins.

• Definition

  ChEBI: N-methylmorpholine N-oxide is a morpholine N-oxide resulting from the oxidation of the amino group of N-methylmorpholine.

• Allgemeine Beschreibung

  4-Methylmorpholine?N-oxide is an organic compound used as a co-oxidant along with OsO₄ and ruthenates in organic synthesis. In recent studies, it has been used as a catalyst in silylcyanation of aldehydes and ketones. Lyocell, a regenerated cellulose fiber, can be prepared using 4-methylmorpholine?N-oxide in an eco-friendly manner.

• Flammability and Explosibility

  Flammable

• Synthese

  A preparation method of N-methylmorpholine-N-oxide comprises the following steps: (1) adding the nano metal oxide into N-methyl morpholine (NMM) and mixing and stirring to uniformly mix the nano metal oxide with the NMM; (2) dropwise adding a hydrogen peroxide solution into a mixed solution of NMM and a catalyst; (3) raising the temperature to accelerate the reaction process; (4) and (4) filtering and distilling the solution prepared in the step (3) under reduced pressure to obtain the required NMMO solution. The method for preparing NMMO provided by the present disclosure has the advantages of a fast reaction rate, low reaction temperature, few byproducts, etc.

• läuterung methode

  When the oxide is dried for 2-3hours at high vacuum, it dehydrates. Add MeOH to the oxide and distil off the solvent under vacuum until the temperature is ca 95o. Then add Me2CO at reflux and cool to 20o. The crystals are filtered off, washed with Me2CO and dried. The degree of hydration may vary and may be important for the desired reactions. [van Rheenan et al. Tetrahedron Lett 1973 1076, Schneider & Hanze US Pat 2 769 823; see also Sharpless et al. Tetrahedron Lett 2503 1976.]

4-Methylmorpholine N-oxide Upstream-Materialien And Downstream Produkte

4-Methylmorpholin-4-oxidmonohydrat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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