Riedl, Wolfgang
Lade...
E-Mail-Adresse
Geburtsdatum
Projekt
Organisationseinheiten
Berufsbeschreibung
Nachname
Riedl
Vorname
Wolfgang
Name
Riedl, Wolfgang
5 Ergebnisse
Suchergebnisse
Gerade angezeigt 1 - 5 von 5
- PublikationIndustrial Upscaling of DOPO-Based Phosphonamidates and Phosphonates Derivatives Using Cl2 Gas as a Chlorinating Agent(American Chemical Society, 10/2018) Salmeia, Khalifah A.; Baumgartner, Georg; Jovic, Milijana; Gössi, Angelo; Riedl, Wolfgang; Zich, Thomas; Gaan, Sabyasachi [in: Organic Process Research & Development]Herein, we report the industrial synthesis procedure of phosphonamidate and phosphonate derivatives via an efficient and simple chlorination of 9,10-dihydro-9-oxa-10-phosphaphenanthren-10-oxide (DOPO) with Cl2 gas. The key step in the synthesis is the conversion of the P–H bond to P–Cl of DOPO by flowing Cl2 gas into a solution of DOPO in dichloromethane, affording the key intermediate 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-chloride (DOPO-Cl) compound which is industrially not available. DOPO-Cl was isolated, characterized, and used for this synthesis of DOPO-based phosphonamidates and phosphonates in relatively high yield by reaction with the corresponding amines and alcohols, respectively. The experimental results show that the chlorination reaction occurs in equimolar ratios of Cl2 gas to DOPO compound. Subsequently, the procedure developed in laboratory scale was industrially applied for synthesis of the 6,6′-(ethane-1,2-diylbis(azanediyl))bis(dibenzo[c,e][1,2]oxaphosphinine-6-oxide) (EDA-DOPO) compound and 6-((1-oxido-2,6,7-trioxa-1-phosphabicyclo[2.2.2]octan-4-yl)methoxy)dibenzo[c,e][1,2]oxaphosphinine-6-oxide (DOPO-PEPA). All synthetic compounds thus obtainedwere characterized and found to be identical to the authentic laboratory scale products.01A - Beitrag in wissenschaftlicher Zeitschrift
- PublikationDirektextraktion von Milchsäure aus Fermentationsbrühen mittels membrangestützter flüssig-flüssig Extraktion(09/2018) Kohler, David; Gössi, Angelo; Riedl, Wolfgang; Venus, Joachim; Schuur, Boelo06 - Präsentation
- Publikation(Semi)‐Kontinuierliche Synthese von Produkten für die Pharma‐ oder Feinchemie in einem neuartigen Rohrreaktor im Pilotmaßstab(09/2018) Leonhardt, Tobias; Skula, Jan; Müller, Benedikt; Schulthess, Pascal; Jeisy, Julius; Riedl, Wolfgang06 - Präsentation
- Publikation(Semi)‐Kontinuierliche Synthese von Produkten für die Pharma‐ oder Feinchemie in einem neuartigen Rohrreaktor im Pilotmaßstab(Wiley, 08/2018) Leonhardt, Tobias; Skula, Jan; Müller, Benedikt; Schulthess, Pascal; Jeisy, Julius; Riedl, Wolfgang [in: Chemie Ingenieur Technik]01A - Beitrag in wissenschaftlicher Zeitschrift
- PublikationResults of a heterogeneous catalyzed gas/liquid oxidation performed in an innovative tubular reactor(05/2018) Leonhardt, Tobias; Zogg, Andreas; Riedl, Wolfgang06 - Präsentation