Dialkoxypyridines and process for their preparation

Abstract From the Canadian patent

60-, A b s t r a c t, Dialkoxypyridines of the general formula I (I), wherein, R1 represents a 1-3C-alkyl radical which is completely or predominantly substituted by fluorine or a chlorodifluoromethyl radical and, R1' represents hydrogen halogen, trifluoromethyl, a 1-3C-alkyl radical or a 1-3C-alkoxy radical, which is optionally completely or predominantly substituted by fluorine, or, R1 and R1' together with inclusion of the oxygen, atom to which R1 is bonded represent a 1-2C-, alkylenedioxy radical which is optionally completely or partly substituted by fluorine or a, chlorotrifluoroethylenedioxy radical R3 represents a 1-3C-alkoxy radical, one of the radicals R2 and R4 represents a …