Appeal No. 95-4721
Application No. 08/128,332
or has the meaning of R , in which formulae above R and R are1 5 6
identical and are C -C alkyl, 2-hydroxyethyl, 2-mercaptoethyl,
1 12
cyclohexyl, benzyl or phenylethyl, or -NR R is pyrrolidinyl,
5 6
piperidyl, morpholinyl or thiomorpholinyl, and R and R are7 8
each independently of the other hydrogen, chloro, bromo, C -
1
C alkyl or C -C alkoxy, which process comprises reacting a4 1 4
pyrrolopyrr ole of formula
wherein X is a group
1
-2-
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Last modified: November 3, 2007