| abstract |
This invention relates to novel alpha-substituted α,β-unsaturated E- or Z-aldehydes, or isomer mixture thereof, of the formula (I) in which R 1 and R 2 may be identical or different and are each H or a hydrocarbon, in which the hydrocarbon may have one or more heteroatoms and R 3 and R 4 may be identical or different and are each a hydrocarbon, in which the hydrocarbon may have one or more heteroatoms, and R 5 may be identical or different and is H or a hydrocarbon, in which the hydrocarbon may have one or more heteroatoms, to the use thereof, and to processes for their preparation. The invention further relates to the preparation of further intermediates for pharmaceuticals and to the preparation of the pharmaceuticals. |