Certain intermediate imino-substituted pyridines
AssigneeBayer Aktiengesellschaft
InventorsRolf Angerbauer, Peter Fey, Walter Hubsch, Thomas Philipps, Hilmar Bischoff, Dieter Petzinna, Delf Schmidt
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Abstract
Intermediate imino-substituted pyridines of the formula ##STR1## in which R.sup.1 is optionally substituted aryl, R.sup.2 is optionally substituted aryl or alkyl, OH, alkoxy, aralkoxy, or optionally substituted aryloxy, R.sup.3 is isopropyl, R.sup.4 is isopropyl X is --CH.sub.2 --CH.sub.2 -- or --CH.dbd.CH--, R is ##STR2## R.sup.6 is H or alkyl, and R.sup.7 is H, alkyl, phenylalkyl, aryl or a cation, and their salts.
Claims2
A ketone of the formula ##STR48## in which R.sup.1 represents aryl having 6 to 10 carbon atoms, which is optionally monosubstituted to trisubstituted by identical or different substituents from the group consisting of halogen, hydroxyl, trifluoromethyl, trifluoromethoxy, nitro, cyano, straight-chain or branched alkyl or alkoxy in each case having up to 8 carbon atoms and aryloxy having 6 to 10 carbon atoms,
- R.sup.2 represents aryl having 6 to 10 carbon atoms, which is optionally monosubstituted to trisubstituted by identical or different substituents from the group consisting of straight-chain or branched alkyl in each case having up to 8 carbon atoms, halogen, cyano, trifluoromethyl, trifluoromethoxy and nitro, or represents straight-chain or branched alkyl having up to 10 carbon atoms, which is optionally substituted by aryl having 6 to 10 carbon atoms, hydroxyl or alkoxy having up to 8 carbon atoms, or represents a group of the formula --OR.sup.5, in which
- R.sup.5 denotes hydrogen or straight-chain or branched alkyl having up to 8 carbon atoms, which is optionally substituted by aryl having 6 to 10 carbon atoms, or denotes aryl having 6 to 10 carbon atoms, which is optionally substituted by straight-chain or branched alkyl or alkoxy in each case having up to 8 carbon atoms, halogen, nitro, cyano, trifluoromethyl or trifluoromethoxy,
- R.sup.3 and R.sup.4 are each isopropyl and R.sup.8 represents alkyl.
A compound of the formula ##STR49## in which R.sup.1 represents aryl having 6 to 10 carbon atoms, which is optionally monosubstituted to trisubstituted by identical or different substituents form the group consisting of halogen, hydroxyl, trifluoromethyl, trifluoromethoxy, nitro, cyano, straight-chain or branched alkyl or alkoxy in each case having up to 8 carbon atoms and aryloxy having 6 to 10 carbon atoms,
- R.sup.2 represents aryl having 6 to 10 carbon atoms, which is optionally monosubstituted to trisubstituted by identical or different substituents from the group consisting of straight-chain or branched alkyl in each case having up to 8 carbon atoms, halogen, cyano, trifluoromethyl, trifluoromethoxy and nitro, or represents straight-chain or branched alkyl having up to 10 carbon atoms, which is optionally substituted by aryl having 6 to 10 carbon atoms, hydroxyl or alkoxy having up to 8 carbon atoms, or represents a group of the formula --OR.sup.3, in which
- R.sup.5 denotes hydrogen or straight-chain or branched alkyl having up to 8 carbon atoms, which is optionally substituted by aryl having 6 to 10 carbon atoms, or denotes aryl having 6 to 10 carbon atoms, which is optionally substituted by straight-chain or branched alkyl or alkoxy in each case having up to 8 carbon atoms, halogen, nitro, cyano, trifluoromethyl or trifluoromethoxy,
- R.sup.3 and R.sup.4 are each isopropyl and
- R.sup.9 represents a hydroxyl protecting group.
Dependencies are inferred from the claim text.