| abstract |
The present invention relates to a method of preparing intermediate hydrazo-silane compounds (precursors of azo-silane compounds), in which use is made, in the presence of a solvent, preferably N-methyl-pyrrolidone, of: - a precursor W-Z, wherein W represents a halogen and Z represents one particular alkyl, aryl or aralkyl group, - a specific nucleophilic agent, for example potassium cyanate, - an alkoxylated hydrazocarboxylate precursor. |