Patent ID: 6603017
Filing Date: 2003-08-05
Classification: C07D

Abstract:
A process for producing an aldehyde of formula V wherein R1 is a C1-C6-alkyl and R6 is Cl or Br, comprising a) halogenating a 1,2-dialkylbenzene of formula II â€ƒin which the radicals R1 are identical or different and are as defined above with a halogen to give a 3,6-dihalo-1,2-dialkylbenzene of formula III â€ƒwherein R1 and R6 are as defined above, b) reacting a 3,6-dihalo-1,2-dialkylbenzene of formula III with hydrogen peroxide and a halogenating agent to give a benzyl halide of formula IV â€ƒin which the radicals R1 and R6 are as defined above, c) oxidyzing a benzyl halide of formula IV with an oxidizing agent to give an aldehyde of formula V â€ƒin which the substituents R1 and R6 are as defined above.