| http://www.w3.org/ns/prov#value | - e substituent A.The alkylating agents of the formula (VII) are likewise generally known compounds of organic chemistry.Suitable diluents for carrying out process (c) according to the invention are organic solvents or aqueous systems.These include, in particular, aromatic hydrocarbons, such as benzene, toluene or xylene; ethers, such as tetrahydrofuran, dioxane or dimethoxyethane; ketones, such as
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