Výsledky vyhledávání - "Oliver Scherr"

Orthoamide und Iminiumsalze, LXXXIV [1]. Die Synthese von starken Formylierungsmitteln im präparativen Großmaßstab: Tris(dichlormethyl)amin / Orthoamides and Iminiumsalts LXXXIV [1]. The Synthesis of Strong Formylating Reagents on a Large Preparative Scale: Tris(chloromethyl)amine

Autor: Ivo C. Ivanov, Georg Ziegler, Jochen Mezger, Oliver Scherr, Michael Csiesielski, Alain Goeppert, Markus Wezstein, Sylvia Leonhardt, Willi Kantlehner

Publikováno v: Zeitschrift für Naturforschung B. 69:525-532

Tris(chloromethyl)amine (4) can be prepared by chloromethylation of urotropin with paraformaldehyde or 1,3,5-trioxane and ethyl-trichlorosilane in good yields. Photochlorination of tris(chloromethyl)amine affords tris(dichloromethyl)amine (2). Both r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5639ec1a722047ee2fe7835d287468b4
https://doi.org/10.5560/znb.2014-3270

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Orthoamide und Iminiumsalze, LXXXIII [1]. Die Synthese von starken Formylierungsmitteln im präparativen Großmaßstab: Triformamid (Triformylamin) / Orthoamides and Iminium Salts LXXXIII [1]. The Synthesis of Strong Formylating Reagents on Large Preparative Scale: Triformamide (Triformylamine)

Autor: Oliver Scherr, Sylvia Leonhardt, Ralf Kreß, Willi Kantlehner, Georg Ziegler

Publikováno v: Zeitschrift für Naturforschung B. 69:332-350

The preparation of sodium diformamide (7) from formamide and sodium methanolate under azeotropic removal of methanol with cyclohexane, or from formamide and sodium ethanolate in ethanol, is described. Diformamide (8) can be prepared by treatment of s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7ef5ddf3c0c8a41e6ad3436c8b946cf1
https://doi.org/10.5560/znb.2014-3269

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Orthoamide, LXIV [1]. Aromatenformylierungen mit Tris(dichlormethyl)amin und Oligoformylamin-Derivaten in Gegenwart von Supersäuren / Orthoamides, LXIV [1]. Formylation of Aromatic Compounds by Tris(dichloromethyl)amine and Oligoformylamine Derivatives in the Presence of Superacids

Autor: Willi Kantlehner, Ralf Kreß, Jean Sommer, Sylvia Leonhardt, Georg Ziegler, Alain Goeppert, Oliver Scherr

Publikováno v: Zeitschrift für Naturforschung B. 62:995-1014

Tris(dichloromethyl)amine (4), triformamide (1) and tris(diformylamino)methane (“formylaalen”) (2) can be activated by addition of trifluoromethanesulfonic acid. The formylating systems thus formed transform activated aromatic compounds, such as

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cd727e0d746d1a5d2efeda9694dca6a1
https://doi.org/10.1515/znb-2007-0803

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Orthoamide, LX [1]. N,N,N’,N’-Tetraformylhydrazin – ein breit anwendbares Formylierungsmittel für aromatische Verbindungen / Orthoamide, LX [1]. N,N,N’,N’-Tetraformylhydrazine – a Formylation Agent for Aromatic Compounds of Wide Scope

Autor: Jochen Mezger, Oliver Scherr, Edmont V. Stoyanov, Georg Ziegler, Erwin Haug, Willi Kantlehner

Publikováno v: Zeitschrift für Naturforschung B. 59:357-365

Keywords The reagent system formed from N,N,N’,N’-tetraformylhydrazine (3) and aluminum chloride allows the formylation of aromatic compounds. The scope of the method is comparable with the Olah formylation and the Groß-Rieche procedure, since b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::04dec2aa5a236c51a5163c7f2be3ad3c
https://doi.org/10.1515/znb-2004-0402

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Orthoamide, LIX. Formyl-aalen [Tris(diformylamino)methan] – ein neues Formylierungsmittel für aktivierte Aromaten/Orthoamides, LIX. Formyl-aalen [Tris(diformylamino)methane] – a New Formylating Reagent for Activated Aromatic Compounds

Autor: Willi Kantlehner, Georg Ziegler, Oliver Scherr, Erwin Haug

Publikováno v: Zeitschrift für Naturforschung B. 57:1295-1304

In the presence of strong Lewis acids such as aluminum chloride or boron trichloride, formyl-aalen [tris(diformylamino)methane] (3) acts as a formylating reagent for aromatic alkane compounds and aromatic ethers. The orthoamide 3 delivers three formy

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https://doi.org/10.1515/znb-2002-1116

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Eine neue, breit anwendbare Synthese für aromatische Aldehyde

Autor: Alexander Gissel, Willi Kantlehner, Michael Ciesielski, Erwin Haug, Richard Haas, Georg Ziegler, Oliver Scherr, Markus Vettel

Publikováno v: Journal für praktische Chemie. 342:297-310

Diformamide (1) reacts with activated aromatic compounds like toluene, anisole, m-xylene, 1,2-dimethoxybenzene in the presence of AlCl3 to give N-(diarylmethyl)-formamides 2a—d, the corresponding aromatic aldehydes 3—6 are formed as by-products i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::603809ac2c30791d17f5b1b152e65a95
https://doi.org/10.1002/(sici)1521-3897(200003)342:3<297::aid-prac297>3.0.co

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ChemInform Abstract: New Formylating Agents - Preparative Procedures and Mechanistic Investigations

Autor: Georg Ziegler, Alessandro Bagno, Willi Kantlehner, Oliver Scherr, Jens Vetter

Publikováno v: ChemInform. 33

The reactivity of new formylating agents related to formamide has been investigated both experimentally and theoretically. The reaction in 1,2-dichloroethane between tris(diformylamino)methane (2) and several arenes, catalyzed by AlCl3 or BCl3, was s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cd4b51128bf467782c3f7d1c2a512722
https://doi.org/10.1002/chin.200212116

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