Claims
- 1. Compounds of the formula I ##STR22## in which X is O or S; R.sub.1 and R.sub.2 are identical or different and each is selected from the group consisting of hydrogen, fluoro, chloro, phenyl, lower alkyl, lower alkoxy, lower dialkylamino, lower trialkylammonium, acylamino, cyano, carboxylic acid ester, carboxylic acid amide, monoalkylcarbonamide, dialkylcarbonamide, sulfonic acid ester, monoalkylsulfonamide and dialkylsulfonamide; or R.sub.1 and R.sub.2 conjointly are a phenylene, a lower alkylene or a 1,3-dioxapropylene;
- and A is a group of the formulae ##STR23## in which R.sub.3 is an alpha-, beta- or gamma-pyridyl, pyridylmethylene, thiophenyl, furanyl, benzofuranyl, pyrazinyl, pyrimidinyl or pyridazinyl group.
- 2. Compounds as claimed in claim 1, wherein A, R.sub.1 and R.sub.2 are as defined in claim 1, and R.sub.3 is an alpha-, beta- or gamma-pyridyl, pyridylmethylene, thiophenyl, pyrazinyl, pyrimidinyl or pyridazinyl group.
- 3. Compounds as claimed in claim 1, wherein X is oxygen; R.sub.1 and R.sub.2 in 5- or 7-position each are a hydrogen or chlorine atom, (C.sub.1 -C.sub.4)-alkyl, phenyl, or together a fused phenyl ring; and R.sub.3 is an alpha- or beta-pyridyl, thiophenyl, furanyl, benzofuranyl or pyridylmethylene group.
- 4. Compounds as claimed in claim 1, wherein X is an oxygen atom; R.sub.1 in 5-position is a hydrogen or chlorine atom, a methyl or phenyl group; R.sub.2 is a hydrogen atom; or R.sub.1 and R.sub.2 each are a methyl group in 5,6- or 5,7-position; and R.sub.3 in the A group is an alpha- or beta-pyridyl, thiophenyl, furanyl, benzofuranyl or pyridylmethylene group.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2820322 |
May 1978 |
DEX |
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Parent Case Info
This application is a continuation of application Ser. No. 036,688 filed May 7, 1979 now abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3644345 |
Siegrist et al. |
Feb 1972 |
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4142044 |
Gunther et al. |
Feb 1979 |
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Continuations (1)
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Number |
Date |
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Parent |
36688 |
May 1979 |
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