Process for preparing a acylhyrazino pyrazole derivative
AssigneeEastman Kodak Company
InventorsRobert Fogg Romanet, Susan Marie Fischer
Life of this patent
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Abstract
A process for making a compound of formula III ##STR1## wherein R.sub.6 is a group bonded to the rest of the molecule by a carbon atom; R.sub.3 is a group containing a carbon atom and bonded to the rest of the molecule by a carbon atom or by a heteroatom; and X is hydrogen or a substituent, comprising: reacting with hydrazine a compound of formula II ##STR2## or a dehydrated analog of formula II, wherein R.sub.3, R.sub.6, and X have the same meaning as for formula III, and Y is a nucleofugal leaving group.
Claims9
A process for making a compound of formula III ##STR14## wherein R.sub.6 is a group bonded to the rest of the molecule by a carbon atom;
- R.sub.3 is a group containing a carbon atom and bonded to the rest of the molecule by a carbon atom or by a heteroatom;
- and
- X is hydrogen or a substituent, comprising:
- reacting with hydrazine a compound of formula II ##STR15## wherein R.sub.3, R.sub.6, and X have the same meaning as for formula III, and Y is a nucleofugal leaving group selected from halide, alkoxide, and phenoxide.
Dependencies are inferred from the claim text.