摘要:
Cyclohexane-1,3-dione derivatives of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 have the meanings given in the disclosure, and the use thereof for combating unwanted plants, especially Gramineae.
摘要:
Phenylalkenylcarboxylic acid and esters thereof of the general formula I ##STR1## where X is hydrogen or fluorine, R.sup.1 is hydrogen, C.sub.1 C.sub.6 -alkyl, C.sub.5 - or C.sub.6 -cycloalkyl, (C.sub.1 -C.sub.4 -alkoxy)-C.sub.2 -C.sub.4 -alkyl or (C.sub.1 -C.sub.4 -alkylthio)-C.sub.2 -C.sub.4 -alkyl; W is a divalent radical --CH.dbd.CR.sup.2 --; --CH.dbd.CY--; --CH.dbd.CR.sup.2 --CH.sub.2 --; --CH.dbd.CR.sup.2 --CH.dbd.CR.sup.3 -- or ##STR2## where Y is chlorine or bromine and R.sup.2 and R.sup.3 are each hydrogen or C.sub.1 -C.sub.4 -alkyl, with the proviso that X is not F when W is --CH.dbd.CR.sup.2 --, their manufacture, and their use as herbicides.
摘要:
Cyanopyridines of the formula ##STR1## are prepared by reacting acrolein and an alkanal ##STR2## or its acetal or ketone of the formula ##STR3## where R.sup.1, R.sup.2 and R.sup.3 may be identical or different and are each hydrogen, alkyl of 1 to 6 carbon atoms or aryl and R.sup.4 is alkyl and n is 0-11, with ammonia in the presence of a zeolite as a catalyst. The reaction is preferably carried out in the gas phase.
摘要:
Substituted phenols of the general formula I ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are each hydrogen or an aliphatic or aromatic hydrocarbon radical, are prepared by dehydrogenating a cyclic alcohol of the general formula II ##STR2## or a cyclic ketone of the general formula III ##STR3## where one of the broken lines can be an additional C-C bond, in the gas phase at from 150.degree. to 380.degree. C. over a supported noble metal catalyst, by a process in which the dehydrogenation catalyst used is palladium or platinum on an aluminum spinel carrier, in particular an aluminum spinel which has a BET specific surface area of from 5 to 150 m.sup.2 /g or, for the dehydrogenation of cyclohexenones, preferably from 10 to 50 m.sup.2 /g. Particularly suitable aluminum spinels are those which, in addition to aluminum, contain magnesium, zinc, cobalt or nickel.In the novel process, substituted phenols are obtained in high yields and selectivities, and the catalyst has an extremely long life without a significant decrease in activity.
摘要:
Novel chloroacetic acid cyclohexylamides of the formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 have the meanings given in the description, their preparation and their use as herbicides.
摘要:
New N-arylpropyl-substituted amines, and salts, molecular compounds and adducts thereof, having a good fungicidal action, fungicides containing these compounds, and processes for manufacturing these compounds.
摘要:
Hydroxylamine ethers I ##STR1## (where X is NO.sub.2, CN, halogen, alkyl or haloalkyl, Y is H, NO.sub.2, CN, halogen, alkyl or haloalkyl, n is 0-2 or 1-4 where Y and all radicals X are halogen and Alk is unsubstituted or substituted alkylene) and their salts with mineral acids or strong organic acids are prepared by reacting either a hydroximino compound II ##STR2## (where R.sup.1 is alkyl, R.sup.2 is alkyl or alkoxy or R.sup.1 +R.sup.2 form an alkylene chain) in the presence of an alkali metal hydroxide, alkali metal alcoholate, alkali metal bicarbonate or alkali metal carbonate as the base, or the corresponding anion II directly, with an alkylating agent III ##STR3## (where R.sup.3 is unsubstituted or substituted alkyl or unsubstituted or substituted phenyl) to give an oximino derivative IV ##STR4## said derivative is cleaved by means of a mineral acid or a strong organic acid to give the salt of I and, if desired, the latter is converted by means of a base into the free compound I. The hydroxylamine ethers I are intermediates for crop protection agents and drugs.
摘要:
The use of nicotinic anilide derivatives of the general formula ##STR1## where the substituents have the following meanings: R.sup.1 halogen, methyl, trifluoromethyl, methoxy, methylthio, methylsulfinyl, methylsulfonylR.sup.2 unsubstituted or halogen-substituted alkyl, unsubstituted or halogen-substituted alkenyl, alkynyl, unsubstituted or halogen-substituted alkoxy, unsubstituted or halogen-substituted alkenyloxy, alkynyloxy, cycloalkyl, cycloalkenyl, cycloalkyloxy, cycloalkenyloxyfor combating Botrytis, and nicotinic anilides of the formula I.