Abstract:
Method for producing (meth)acrylic acid esters (U) containing urethane groups by reacting an alcohol (A) containing urethane groups with a (meth)acrylic acid ester of a saturated alcohol (G) in the presence of at least one polymerization inhibitor (P) having an enzyme (E) as a catalyst in a reactor, wherein a) the released saturated alcohol and the optionally used entrainer form an azeotrope with the excess corresponding (meth)acrylic acid ester (G), the azeotrope is separated by distillation at reduced pressure, and b) at least one partial flow from the sump of the reactor is recirculated via the head of the distillation column.
Abstract:
The present invention relates to a method for the enzymatic hydroamination of C-C double bonds catalyzed by enzymes structurally and/or functionally related to phenylalanine ammonia lyase (PAL) isolated from microorganisms of Petroselinum crispum, Rhodoturula glutinis and/or functional active derivatives thereof.
Abstract:
The present invention relates to enzymic processes for preparing S-butan-2-ol; and to enzymes for carrying out said processes; to nucleic acid sequences coding for said enzymes, to expression cassettes, vectors and recombinant hosts containing said nucleic acid sequences.
Abstract:
The present invention relates to enzymic processes for preparing S-butan-2-ol; and to enzymes for carrying out said processes; to nucleic acid sequences coding for said enzymes, to expression cassettes, vectors and recombinant hosts containing said nucleic acid sequences.
Abstract:
Procedimiento de preparación de ésteres de ácido (met)acrílico que contienen grupos uretano (U) mediante reacción de un alcohol que contiene grupos uretano (A) con un éster de ácido (met)acrílico de un alcohol saturado (G) en presencia de al menos un inhibidor de la polimerización (P) con una enzima (E) como catalizador en un reactor, caracterizado porque a) el alcohol saturado liberado y el agente de arrastre dado el caso usado con el éster de ácido (met)acrílico (G) correspondiente en exceso forman un azeótropo, el azeótropo se elimina por destilación a presión reducida y b) al menos una corriente parcial procedente del fondo del reactor se hace circular a través de la cabeza de la columna de destilación.
Abstract:
Método para la preparación de (S)-butan-2-ol mediante la reducción de butan-2-ona en presencia de una alcoholdeshidrogenasa (i) con la secuencia polipeptídica SEQ ID NO:2, o (ii) con una secuencia polipeptídica que presenta al menos un 80% de identidad secuencial con SEQ ID NO:
Abstract:
Die vorliegende Erfindung betrifft ein Verfahren für die enzymatische Hydroaminierung von C-C-Doppelbindungen, die von strukturell und/oder funktionell mit aus Mikroorganismen von Petroselinum crispum, Rhodoturula glutinis isolierter Phenylalanin-Ammoniak-Lyase (PAL) verwandten Enzymen und/oder funktionellen aktiven Derivaten davon katalysiert wird.