Process for formylation
AssigneeDeutsche Gold- und Silber-Scheideanstalt vormals Roessler
InventorsPaul Scherberich, Wolf-Dieter Pfeifer
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Abstract
Organic basic nitrogen compounds are formylated in the presence of acetic anhydride by adding the nitrogen compound as a salt and carrying out the formylation with an alkali or ammonium formate in an organic solvent having limited miscibility with water.
Claims18
In a process for the formylation of an organic basic nitrogen compound having at least a hydrogen atom attached to the basic nitrogen atom in the presence of acetic anhydride, the improvement comprising adding the nitrogen compound as a salt with an acid and carrying out the formylation without formic acid and with an alkali formate or ammonium formate in an inert organic solvent having limited solubility in water.
Dependencies are inferred from the claim text.