Basf Se Corporation

Basf Aktiengesellschaft

Tobias Aechtner

Hermann Luyken

Jens Scheidel

Peter Pfab

Gerd Haderlein

Wolfgang Siegel

Robert Baumann

Michael Bartsch

Andreas Leitner

Petra Deckert

Peter Bassler

Tim Jungkamp

Andrea Haunert

Thomas Genger

Werner Weinle

Peter Baβler

Andreas Glass

Verena Weiskopf

Christian Dienes

Alexander Tempel

Thorsten Hofrichter

Alexandre Tempel

A process is described for preparing 3-pentenenitrile, characterized by the following process steps:

Method for producing linear pentenenitrile

A process for isomerizing cis-2-pentenenitrile to 3-pentenenitriles, by isomerizing cis-2-pentenenitrile with amidines, tertiary amines or mixtures thereof as a catalyst at temperatures of 80 to 200&#xb0; C. and a pressure of 0.01 to 50 bar.

Process for isomerizing CIS-2-pentenenitrile to 3-pentenenitriles

A method for producing 3-pentenenitrile is provided that includes: (a) isomerizing an educt stream containing 2-methyl-3-butenenitrile on at least one dissolved or dispersed isomerization catalyst to form a stream (1), which contains the isomerization catalyst(s), 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile; (b) distilling the stream (1) to obtain a stream (2) as the overhead product, which contains 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile and a stream (3) as the bottom product, which contains the isomerization catalyst(s); (c) distilling the stream (2) to obtain a stream (4) as the overhead product, which is enriched with (Z)-2-methyl-2-butenenitrile in comparison to stream (2), and a stream (5) as the bottom product, which is enriched with 3-pentenenitrile and 2-methyl-3-butenenitrile in comparison to stream (2); (d) distilling stream (5) to obtain a stream (6) as the bottom product, which contains 3-pentenenitrile and a stream (7) as the head product containing 2-methyl-3-butenenitrile.

An process for preparing 3-pentenenitrile by hydrocyanating 1,3-butadiene, in which the process yield with regard to recycled 1,3-butadiene is maximized.

Method for producing 3-pentenenitrile by means of the hydrocyanation of 1,3-butadiene

A process for extractively removing homogeneously dissolved catalysts from a reaction effluent of a hydrocyanation of unsaturated mononitriles to dinitriles with a hydrocarbon H, including performing the steps of a) concentrating the reaction effluent before step b) by distillation at pressures of from 0.1 to 5000 mbar and temperatures of from 10 to 150&#xb0; C., b) adding a hydrocarbon H to the concentrated reaction effluent to obtain a stream I, and c) feeding stream I, without prior separation of the liquid phases, into an extraction apparatus and extracting it at a temperature T with the hydrocarbon H to obtain a stream II comprising the hydrocarbon H enriched with the catalyst and a stream III having a low catalyst content.

Extraction of nickel (0) complexes from nitrile mixtures with reduced rag formation

Method of producing compounds of the general formulaXPR(OR)&#x2003;&#x2003;Iawhere X is chlorine, bromine or iodine and Ris an organic radical, by reacting compounds of the general formulaXPR&#x2003;&#x2003;II,in which X has the meaning given above and Ris an organic radical, with compounds of the general formulaROH&#x2003;&#x2003;III,in which Rhas the meaning given above, to give a mixture IV, in that

Method for producing organic phosphorous compounds containing halogens

A process for preparing biphenols of the general formula I  

Method for producing biphenols from monophenols

A process for preparing nickel(0)-phosphorus ligand complexes comprising at least one nickel(0) central atom and at least one phosphorus ligand by reacting a nickel(II) compound with a reducing agent in the presence of the ligand to give a reaction mixture, wherein

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Mannheim, Germany

Tobias Aechtner