Nitrogen Containing Dimer Produced Patents (Class 205/416)
  • Patent number: 10131607
    Abstract: The present invention relates to a process for preparing unsymmetric compounds from the group of the m-terphenyls which can be used as unsymmetric OCO pincer ligands, comprising the process steps of a) reacting a first substituted or unsubstituted phenol with a 1,3-disubstituted arene which may likewise be substituted in the 2 and 5 positions to obtain a phenol-arene coupling product and b) optionally protecting the OH group of the phenol-arene coupling product with a protecting group to obtain a protected phenol-arene coupling product, and c) reacting the phenol-arene coupling product from a) or b) with a second substituted or unsubstituted phenol to obtain an unsymmetric m-terphenyl, with the proviso that the first phenol and the second phenol have different substitution, characterized in that at least one of process steps a) and c) is conducted as an electrochemical process step.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: November 20, 2018
    Inventors: Katrin Marie Dyballa, Robert Franke, Dirk Fridag, Siegfried R. Waldvogel, Bernd Elsler, Anton Wiebe, Sebastian Lips
  • Patent number: 8747646
    Abstract: The invention relates to a process for preparing biaryls by anodic cross-dehydrodimerization of substituted phenols with arenes in the presence of partially fluorinated and/or perfluorinated mediators and a supporting electrolyte.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: June 10, 2014
    Assignee: BASF SE
    Inventors: Andreas Fischer, Itamar Michael Malkowsky, Florian Stecker, Siegfried R. Waldvogel, Axel Kirste
  • Patent number: 6217740
    Abstract: The invention concerns a process for electrochemically producing a carbonaceous material with its surface modified by organic groups, in particular functionalized organic groups. The process comprises providing a solution, in a protic or aprotic solvent, comprising a salt of a carboxylate of an organic residue capable of undergoing a Kolbe reaction. The solution is then put in contact with a carbonaceous material, wherein the carbonaceous material is positively polarized with respect to a cathode that is also in contact with the solution. The solution may optionally contain an electrolyte. The invention also concerns carbonaceous materials modified at the surface with arylmethyl groups and the use of these modified materials, for example, in the production of composite materials.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: April 17, 2001
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Claude Andrieux, Felipe Gonzalez, Jean Pinson, Jean-Michel Saveant
  • Patent number: 6214196
    Abstract: A method of producing a bisphosphine oxide by performing a koble electrolysis coupling reaction to a phosphine oxide carboxylic acid represented by the general formula (1): wherein the bisphosphine oxide is represented by the following general formula (2):
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: April 10, 2001
    Assignee: Nippon Chemical Industrial Co., Ltd.
    Inventors: Masashi Sugiya, Hiroyuki Nohira