| 摘要 |
<p>The invention relates novel compounds of formula (IV) (see claim 1)
and a process for preparing compounds (IV) (see claim 5) which comprises reaction of a compound of formula (II) with a compound of the formula (III) in the presence of a chlorinating agent: The compounds (IV) are suitable for preparing compounds (I),
by reaction of the compound (IV) with a compound of formula (V) in the presence of a base (see claim 10):
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ R 1 R 2 NH€ƒ€ƒ€ƒ€ƒ€ƒ(V).</p> |
