Claims
- 1. A chemical intermediate of the formula: ##STR129## a salt or a stereochemically isomeric form thereof, wherein: wherein one or two hydrogen atoms in the dihydro-1,4-dioxane moiety may be replaced by a C.sub.1-6 alkyl group;
- R.sup.1 represents halo; and
- R.sup.2 represents amino, mono- or di(C.sub.1-6 alkyl)amino, arylC.sub.1-6 alkylamino, or C.sub.1-6 alkylcarbonylamino.
- 2. The chemical intermediate of claim 1 wherein said chemical intermediate is selected from the group consisting of:
- 8-amino-7-chloro-2,3-dihydro-1,4-benzodioxin-5-carboxylic acid; and salts thereof.
- 3. The chemical intermediate of claim 1 wherein R.sup.2 is amino.
- 4. The chemical intermediate of claim 3 wherein R.sup.1 is chloro.
CROSS-REFERENCE TO RELATED APPLICATION
This is a division of application Ser. No. 08/301,825, filed Sep. 7, 1994allowed, which was a division of application Ser. No. 07/489,419, filed Mar. 6, 1990, now U.S. Pat. No. 5,374,637, which was a continuation-in-part of application Ser. No. 07/326,941, filed Mar. 22, 1989, now abandoned.
Foreign Referenced Citations (2)
Number |
Date |
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890962 |
May 1982 |
BEX |
0069482 |
Jan 1983 |
EPX |
Divisions (2)
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Date |
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301825 |
Sep 1994 |
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Parent |
489419 |
Mar 1990 |
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Continuation in Parts (1)
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326941 |
Mar 1989 |
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