Basf Se Corporation

Ciba Specialty Chemicals Corporation

Jemima Schmidt

Beat Schmidhalter

Gabriele Baisch

Reinhold Öhrlein

Kai-Uwe Schöning

Paul Van Der Schaaf

Bernd Lamatsch

Thomas Schäfer

Tunja Jung

Roger Prétôt

Gisèle Baudin

Sandra Franziska Mayer

This invention relates to electroluminescent metal complexes of the formula (I) wherein the ring A, represents an optionally substituted aryl group which can optionally contain heteroatoms, represents an optionally substituted nitrogen containing aryl group, which can optionally contain further heteroatoms, or the ring A may be taken with the ring B binding to the ring A to form a ring; represents an acyclic carbene, or a cyclic carbene (ring C), which can optionally contain heteroatoms, represents an optionally substituted aryl group which can optionally contain heteroatoms,

Electroluminescent metal complexes with nucleophilic carbene ligands

This invention relates to electroluminescent metal complexes of the formula (I), wherein the ring A, formula (II), represents an optionally substituted aryl group which can optionally contain heteroatoms, the ring B, formula (III), represents an optionally substituted nitrogen containing aryl group, which can optionally contain further heteroatoms, or the ring A may be taken with the ring B binding to the ring A to form a ring; the group C, formula (IV), represents an acyclic carbene, or a cyclic carbene (ring C), which can optionally contain heteroatoms, the ring D, formula (V), represents an optionally substituted aryl group which can optionally contain heteroatoms, n1 is an integer of 1 to 3, m1 is an integer of 0, 1, or 2, m2 is an integer 0, or 1, Mis a metal with an atomic weight of greater than 40, Lis a monodentate ligand, or a bidentate ligand, Y is &#x2014;C(&#x2550;O)&#x2014;, or &#x2014;C(X), wherein Xis hydrogen, or Calkyl, especially hydrogen, and y is 0, or 1, especially 0; a process for their preparation, electronic devices comprising the metal complexes and their use in electronic devices, especially organic light emitting diodes (OLEDs), as oxygen sensitive indicators, as phosphorescent indicators in bioassays, and as catalysts. 

The present invention relates to an improved process for the preparation of phenolic carboxylic acid derivatives catalysed by biocatalytic esterification, transesterification or amidation of a corresponding lower alkyl ester. Biocatalysis is performed in the presence of suitable enzymes, e.g. hydrolases, especially esterases, amidases, lipases and proteases.

Process for the preparation of phenolic carboxylic acid derivatives by enzymatic catalysis

The invention relates to a process for preparing organosilicon group containing photoinitiators of the formula (I), wherein m is a number from 1 to 200; q is 0 or 1; A is IN-C(O)&#x2014;O&#x2014;CHR&#x2014;Y&#x2014; or IN-C(O)&#x2014;NH&#x2014;CHR&#x2014;Y&#x2014;; A' is A or R&#x2032;; Rand R&#x2032;, Rand R&#x2032; are C&#x2013;Calkyl or phenyl, or &#x2014;(O)&#x2014;SiRR&#x2032;R; Ris hydrogen or C&#x2013;Calkyl, Y is a divalent group selected from C&#x2013;Calkeylene, C&#x2013;Calkenylene or &#x2014;(CH)&#x2014;O&#x2014;(CH)&#x2014;; and b are each independently of the other a number of 1 to 6; IN is a photolabile functional moiety of the formula (II) or (III), wherein Ris hydrogen or &#x2014;C(O)&#x2014;C(O)&#x2014;OH or &#x2014;C(O)&#x2014;C(O)&#x2014;OC&#x2013;Calkyl and n is 1&#x2013;3; Rand Rare C&#x2013;Calkyl or together are cycloC&#x2013;Calkyl; Ris hydroxy, C&#x2013;Calkoxy or morpholinyl; X is &#x2014;(CH)&#x2014;, &#x2014;(CH)&#x2014;O&#x2014;(CH)&#x2014; or &#x2014;(CH)&#x2014;O&#x2014;CO&#x2014;(CH)&#x2014;; a and b are each independently of the other a number of 1 to 6; whereby the process is characterized in that a photolabile functional moiety containing a carboxy group (IN-COOH) or an alkoxycarbonyl group (IN-CO&#x2014;OC&#x2013;Calkyl) is reacted with a carbinol- or amino terminated organosilicon compound of the formula (IV), wherein m, Rand R&#x2032;, Rand R&#x2032; are as defined above and B is &#x2014;Y&#x2014;CHR&#x2014;OH or &#x2014;Y&#x2014;CHR&#x2014;NH; B&#x2032; is B or R&#x2032;, in the presence of an enzyme which catalyzes the esterification, transesterification or amidation reaction.

Enzymatic process for preparing organosilicon group containing photoinitiators

Growing community of inventors

Schopfheim, Germany

Jemima Schmidt