Dialkoxyketones and their preparation

Abstract From the Canadian patent

13 - O.Z. 0050/38091, Abstract of the Disclosure: Dialkoxyketones of the formula I, (I), where R1 is C1-C13-alkyl, R2 and R3 are each hydrogen or C1-C4-alkyl, R4, R5, R6, R7 and R8 are each hydrogen halogen, C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxy C1-C4-alkylthio, C1-C4-haloalkoxy, C1-C4-haloalkylthio, or phenyl which is unsubstituted or substituted by halogen, C1-C4-alkyl or C1-C4-alkoxy, or two adjacent radicals R4 to R8 form a C3-C5-alkylene chain which is unsubstituted or substituted by C1-C4-alkyl or form an unsub-, stituted or substituted fused aromatic ring and m and n, are each 0 or 1, with the proviso that m and n are not 0 when R4 or R8 is C1-C4-alkoxy, R5 or R7 is …