Chemical process for the preparation of imidazo-quinoxalines and intermediates for use in the process
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United States of America Patent
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Mar 12, 1991
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N/A
app pub date -
Nov 8, 1989
filing date -
Nov 10, 1988
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Expired
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Abstract
The invention relates to a dealkylation chemical process for preparing imidazoquinoxalines bearing hydrogen substitution in the five position, and to valuable pharm-intermediates of the formula I ##STR1## wherein ##STR2## wherein R' is C.sub.1-6 -alkyl, C.sub.3-7 -cycloalkyl, phenyl, thienyl, or C.sub.1-3 -alkoxymethyl and wherein R.sup.6 and R.sup.7 independently are hydrogen,halogen or CF.sub.3, used in that process. The intermediates also have anticonvulsant and anxiolytic properties.
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