| http://www.w3.org/ns/prov#value | - The compounds of formula (1) may be prepared, for example, by reacting a compound of formula wherein A* is amino, N???C1-C4-alkylamino, hydroxy, isocyanato, isothiocyanato, carboxy, or a carboxy derivative, for example an acid halide, ester or anhydride, and R1, Z and n are as defined above, with a compound of formula
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