flag flag  

Search all repositories
add criteria
Close advanced options Search for

 

Enter more search criteria
Publication Date
     
From
To
Document Language
Document Type
Repositories
New Search Save Search Refine Search
Results
author = "Neudörfl, Jörg M."
1

Found 9 documents, displaying page 1 of 1

Potassium (1-methoxy­carbonyl-2-methyl­prop-2-en-2-yl­idene)azinate

Author(s) : Reuter, Cédric , Neudörfl, Jörg M. , Schmalz, Hans-Günther
Description : In the title compound, K+·C6H8NO4 −, the K+ cations have a coordination number of seven and are surrounded by four bidentate azinate anions. The methyl­ene groups of the anions are always directed towards the coordinated potassium cations. The N—C—C—C torsion angle is 101.2 (2)°. The ...
Repository : Europe PubMed Central
Language(s) : English

Lithium phosphonate umpolung catalysts: Do fluoro substituents increase the catalytic activity?

Author(s) : Gliga, Anca , Goldfuss, Bernd , Neudörfl, Jörg M
Description : Fluorinated and nonfluorinated phosphonates are employed as precatalysts in lithium phosphonate catalyzed cross benzoin couplings. Surprisingly, a decreased catalytic activity for the fluorinated precatalysts compared to the nonfluorinated systems is observed. Furthermore, the ring size of six, seve...
Repository : Europe PubMed Central
Language(s) : English

Metal-mediated aminocatalysis provides mild conditions: Enantioselective Michael addition mediated by primary amino catalysts and alkali-metal ions

Author(s) : Leven, Matthias , Neudörfl, Jörg M , Goldfuss, Bernd
Description : Four catalysts based on new amides of chiral 1,2-diamines and 2-sulfobenzoic acid have been developed. The alkali-metal salts of these betaine-like amides are able to form imines with enones, which are activated by Lewis acid interaction for nucleophilic attack by 4-hydroxycoumarin. The addition of ...
Repository : Europe PubMed Central
Language(s) : English

Synthesis of spiroannulated and 3-arylated 1,2,4-trioxanes from mesitylol and methyl 4-hydroxytiglate by photooxygenation and peroxyacetalization

Author(s) : Griesbeck, Axel G , Höinck, Lars-Oliver , Neudörfl, Jörg M
Description : Cycloalkanones were utilized in the Lewis acid catalyzed peroxyacetalization of ß-hydroperoxy homoallylic alcohols (prepared by the ene reaction of the allylic alcohols mesitylol and methyl 4-hydroxytiglate, respectively, with singlet oxygen) to give spiroannulated 1,2,4-trioxanes 5a–5e and 9a–9e, r...
Repository : Europe PubMed Central
Language(s) : English

(RS)-Tricarbon­yl(η4-1,3-diacet­oxy-5,5-dimethyl­cyclo­hexa-1,3-diene)iron(0)

Author(s) : Romanski, Steffen , Neudörfl, Jörg-M. , Schmalz, Hans-Günther
Description : In the title compound, [Fe(C12H16O4)(CO)3], the diene moiety of the mol­ecule is virtually planar, with a C—C—C—C torsion angle of −1.4 (2)°. The six-membered ring exhibits a boat conformation, with torsion angles of 46.2 (2) and 46.5 (3)° for a double-bond and the two attached Csp 3 ...
Repository : Europe PubMed Central
Language(s) : English

Tris[(6S)-6-hy­droxy-4-epi-shikimic acid] monohydrate: an enanti­omerically pure hy­droxy­lated shikimic acid derived from methyl shikimate

Author(s) : Griesbeck, Axel G. , Miara, Claus , Neudörfl, Jörg-M.
Description : The title compound, 3C7H10O6·H2O, is the enanti­omerically pure product of a multi-step synthesis from the enanti­omerically pure natural shikimic acid. The asymmetric unit contains three mol­ecules of the acid and one mol­ecule of water. The cyclo­hexene rings of the acids have half-chair conformat...
Repository : Europe PubMed Central
Language(s) : English

trans-1,2-Bis(3,5-dimethoxy­phen­yl)ethene

Author(s) : Ritter, Stefanie , Neudörfl, Jörg-M. , Velder, Janna , Schmalz, Hans-Günther
Description : The title compound, C18H20O4, was prepared in high yield from 3,5-dimethoxy­styrene via a Ru-catalysed homo-olefin metathesis. Exclusive formation of the E-configurated isomer was observed. Inter­estingly, one symmetric unit contains two mol­ecules adopting an s-syn-anti and and an all-s-anti confor...
Repository : Europe PubMed Central
Language(s) : English

trans-Ethyl­enedi-p-phenyl­ene diacetate

Author(s) : Ritter, Stefanie , Neudörfl, Jörg-M. , Velder, Janna , Schmalz, Hans-Günther
Description : The centrosymmetric title compound, C18H26O4, was prepared in high yield from 4-acetoxy­styrene via Ru-catalysed homo-olefin metathesis. Exclusive formation of the E-configurated isomer was observed. In the crystal, a strong C—H⋯π inter­molecular inter­action links the mol­ecules together.
Repository : Europe PubMed Central
Language(s) : English

3β-Acet­oxy-19-hy­droxy-Δ5-pregnen-20-one

Author(s) : Meier zu Greffen, Aike , Kranz, Darius P. , Neudörfl, Jörg-M. , Schmalz, Hans-Günther
Description : In the title compound, C23H34O4, the C/D and D/E rings are trans fused and the A/B ring possesses an anti fusion. The two cyclo­hexane rings adopt a chair conformation while the cyclo­hexene ring exhibits a half-chair conformation. The cyclo­pentane ring displays an envelope conformation with the C ...
Repository : Europe PubMed Central
Language(s) : English
1

Found 9 documents, displaying page 1 of 1