摘要:
2-Phenyl-4H-3,1-benzoxazin-4-ones of the general formula I ##STR1## where R.sup.1 and R.sup.2 are each hydrogen or halogen, R.sup.1 may furthermore be methyl or methoxy and R.sup.2 may furthermore be haloalkyl, haloalkoxy, haloalkylmercapto or haloalkylsulfonyl, each of 1 to 3 carbon atoms, are prepared by reacting an appropriate anthranilic acid with an appropriate benzoyl halide in the presence of a base (acylation) and effecting ring closure by removal of water (cyclization), the process being carried out in a suspending agent which is immiscible with aqueous alkali metal hydroxide solution and in the presence of a phase-transfer catalyst.
摘要:
Diphenyl ethers of the formula ##STR1## where Z.sub.1 and Z.sub.2 are each hydrogen, halogen, nitro, cyano, carboxyl, alkyl, haloalkyl or alkoxy, Z.sub.3 is halogen, nitro, cyano, alkyl, haloalkyl, alkoxy, haloalkoxy, alkylmercapto, haloalkylmercapto, alkylsulfinyl, haloalkylsulfinyl, alkylsulfonyl or haloalkylsulfonyl, Y is halogen, cyano or nitro, R.sub.1 is hydrogen, alkyl, cycloalkyl, alkoxy, haloalkyl or alkoxyalkyl, R.sub.2 is hydrogen, alkyl, acyl or an alkali metal atom and R.sub.3 is hydrogen, alkyl or an alkali metal atom, and herbicides containing these compounds.
摘要:
Novel N-alkoxycarbonyl- and N-alkoxythiocarbonyl-amidines and a process for the preparation of alkoxycarbonyl- and alkoxythiocarbonyl- amidines by reacting an amidine with an ester of chlorocarbonic acid or chlorothiocarbonic acid in the presence of an inorganic acid acceptor and a 2-phase aqueous/organic solvent mixture at from 0.degree. to 60.degree.0 C.The novel end products which can be prepared by this process are useful starting materials for crop protection agents, and can be used in particular for the preparation of novel, selective herbicides.
摘要:
A process for combating the growth of unwanted plants, wherein the soil or the plants are treated with a compound of the formula ##STR1## where Ar denotes substituted or unsubstituted phenyl or naphthyl, R.sup.1 denotes hydrogen or methyl, R.sup.2 denotes hydrogen or alkyl, R.sup.3 denotes alkyl, cycloalkyl, alkenyl, alkynyl, or substituted aralkyl, and Az denotes substituted or unsubstituted pyrazole, imidazole or triazole, or a metal complex thereof, and herbicides for carrying out the process.
摘要:
Trifluoromethoxyphenyl-(di)-thiophosphoric acid esters of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and X have the meanings given in the description, and their use in pest control.
摘要:
Substituted pyridazones of the general formula ##STR1## where R.sup.2 is halogen or alkoxy, R.sup.1 is amino, alkylamino, dialkylamino, alkoxyamino, alkylalkoxyamino, halogen, alkoxy, trimethyleneimino or acylated amino, X is unsubstituted or substituted phenoxy of the formula ##STR2## where R.sup.3, R.sup.4 and R.sup.5 are each, independently of one another, hydrogen, halogen, nitro, cyano, carboxyl, alkyl, haloalkyl, alkoxy, haloalkoxy, alkylmercapto, haloalkylmercapto, alkylsulfinyl or alkylsulfonyl and Y is hydrogen, cyano, haloalkyl, halogen or nitro, and herbicides which contain these compounds.
摘要:
Substituted N-benzoylanthranilic acid derivatives of the formula I ##STR1## and their anhydro compounds, of the formula II ##STR2## where R.sup.1 is substituted phenyl,R.sup.2 is hydrogen, nitro, cyano or halogen,X is hydrogen, halogen, nitro or cyano, or is alkyl, haloalkyl, alkoxy, haloalkoxy, haloalkylmercapto or alkylmercapto, each of 1 to 4 carbon atoms, andY is --OR.sup.6 or ##STR3## where R.sup.6 is hydrogen, or is alkyl, alkenyl or alkynyl each of up to 4 carbon atoms, or is one equivalent of an alkaline earth metal cation, of an alkali metal cation or of an ammonium ion which is unsubstituted or is substituted by alkyls of 1 to 4 carbon atoms, andR.sup.7 and R.sup.8 independently of one another are hydrogen or alkyl of 1 to 4 carbon atoms, herbicides containing these compounds, and processes for controlling undesired plant growth by means of these compounds.
摘要:
The production of .beta.-haloalkylaminosulfonyl halides by the reaction of an aziridine with a sulfuryl halide, and the new .beta.-haloalkylaminosulfonyl halides. The new compounds which can be prepared by the process of the invention are valuable starting materials for the manufacture of plant protection agents, dyes and pharmaceutical substances.
摘要:
New sulfamic acid halides and a process for their manufacture by reacting N-(.alpha.-haloalkyl)-sulfamic acid halides with alcohols. The products are starting materials for the manufacture of crop protection agents, dyes and pharmaceuticals.
摘要:
New and valuable 2,1,3-benzothiadiazin-(4)-one-2,2-dioxides having a good herbicidal action and a process for controlling the growth of unwanted plants with these compounds.