Preparation of alkapolyenyl compounds used in surfactant and detergent production involves adding mineral acid or inorganic halide in homogeneously catalyzed reaction of substituted alkadiene and conjugated diene

摘要

In the preparation of alkapolyenyl compounds (I) by homogeneously catalyzed reaction of 1-substituted alka-2,7-dienes (IIA) and/or 3-substituted alka-1,7-dienes (IIB) with conjugated dienes (III) in the presence of rhodium (Rh) compounds, at least one mineral acid and/or inorganic halide is dissolved in the reaction mixture. In the preparation of alkapolyenyl compounds (I) by homogeneously catalyzed reaction of 1-substituted alka-2,7-dienes of formula (IIA) and/or 3-substituted alka-1,7-dienes of formula (IIB) with conjugated dienes of formula (III) in the presence of rhodium (Rh) compounds, at least one mineral acid and/or inorganic halide is dissolved in the reaction mixture: R1 = hydrogen (H) or a 1-6 carbon (C) alkyl, 5-8 C cycloalkyl, 1-6 C alkanoyl, 6-12 C aryl, 6-12 C aryloyl or 7-18 C aralkyl group, optionally mono-, di- or tri-substituted by hydroxyl, 1-6 C alkoxy, 1-6 C alkanoyloxy and/or halogen; R2-7 = H or 1-6 C alkyl; R8 = H, 1-6 C alkyl or 2-6 C alkenyl An Independent claim is also included for the use of mineral acid(s) and/or inorganic halide(s) as cocatalyst dissolved in the reaction mixture in the homogeneously catalyzed reaction of (IIA) and/or (IIB) with (III) in the presence of Rh compounds.