Abstract: The preparation of 4-methylenetetrahydropyran (I) by reacting 3-methylenepentane-1,5-diol with a sulfohalide in the presence of an aqueous mineral base. Compound I serves as an intermediate in organic syntheses.

Abstract: Novel tert-butylalkynols of the formula (I) ##STR1## where Y is hydrogen, halogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -haloalkyl, aryl, aryloxy or benzyl and m is an integer from 1 to 3, and the individual groups Y may be identical or different when m>1, and a process for their preparation are described.

Abstract: Diethers of m- or p-hydroxyphenol, as well as the monoethers, are prepared by reacting m- or p-tert.-butoxyphenol of the formula II ##STR1## with a halogen compound in the presence of a hydroxide, carbonate and/or bicarbonate of an alkali metal or alkaline earth metal and an organic solvent which is inert under the reaction conditions, at from 20.degree. C. to 150.degree. C., and, if desired, reacting the resulting diether with a dilute aqueous inorganic acid at from 30.degree. to 100.degree. C. to give the monoether.The end products which can be prepared by the process according to the invention are useful starting materials for the preparation of dyes, drugs and crop protection agents.

Abstract: The apparatus serves for washing out and sorting organic, loamy and other impurities from continuously supplied coarse and fine granular solids, such as freshly dredged and treated gravel, with a chute 12 supplying the material to a washing trough 30 and spray jets 8, 10 for the washing liquid, consisting of an endless conveyor belt 29 supported on support rollers which are mounted on the machine frame 1 in such a manner that one section 9 of the conveyor belt is arranged downstream of the chute 12 and is formed as a washing trough 30, while the other section 11 of the conveyor belt 29 is arranged underneath the chute 12 and rising upwards against the direction of flow of the material supplied, the conveyor belt 29 being driven in the opposite direction to the direction of flow of the material supplied through the chute. Support rollers 6 and 17 are arranged to the side of the outer deflection pulley 32, in the direction of movement 4 of the conveyor belt 29.

Abstract: A compound of the chemical formula (I) ##STR1## in a specific crystalline form, processes for its preparation, and its use for pest control.

Abstract: Cyclohexane-1,3-dione derivatives of the formula ##STR1## where A is phenyl which is monosubstituted in the ortho- or meta-position by alkoxy, nitro, halogen or methylsulfonyl, or is phenyl which is monosubstituted in the ortho-, meta- or para-position by alkyl, phenyl, alkoxy, fluorine-substituted alkoxy, unsubstituted or substituted phenoxy, alkenyloxy, alkynyloxy, unsubstituted or substituted benzyloxy, alkylsulfinyl, alkylsulfonyl, alkylsulfonyloxy, trifluoromethyl, alkoxyalkyl or alkoxyalkoxy, or is phenyl which is disubstituted trisubstituted or tetrasubstituted by identical or different substituents selected from the group consisting of alkyl, alkoxy, halogen, nitro and 2,4-dichlorophenoxy, with the proviso that, where the substituents are identical, the disubstituted, trisubstituted or tetrasubstituted phenyl radical does not carry methyl radicals, R.sup.1 is hydrogen, methoxycarbonyl, ethoxycarbonyl, methyl or cyano, R.sup.2 is alkyl, and R.sup.

Abstract: The invention relates to novel alkoxy substituted maleimides of the formula ##STR1## where R.sup.1 is hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.2 -C.sub.8 -alkenyl, phenyl or phenylalkyl, and the organic radicals may furthermore carry inert substituents, and R.sup.2 and R.sup.3 are each C.sub.1 -C.sub.4 -alkyl, C.sub.2 -C.sub.4 -alkenyl, C.sub.1 -C.sub.4 -haloalkyl or C.sub.2 -C.sub.4 -haloalkenyl, and alkoxy-substituted maleic anhydrides of the formula II ##STR2## where R.sup.2 is C.sub.1 -C.sub.4 -alkyl, C.sub.2 -C.sub.4 -alkenyl, C.sub.1 -C.sub.4 -haloalkyl or C.sub.2 -C.sub.4 -haloalkenyl and Z is hydrogen, halogen or a radical OR.sup.3, where R.sup.3 is C.sub.1 -C.sub.4 -alkyl, C.sub.2 -C.sub.4 -alkenyl, C.sub.1 -C.sub.4 -haloalkyl or C.sub.2 -C.sub.4 -haloalkenyl.The invention further relates to processes for preparing such maleimides I and the corresponding maleic anhydrides II and their use as graft monomers in graft polymers based on polyphenylene ethers.

Abstract: Compounds of the general formula ##STR1## where X is fluorine, chlorine, ethyl or n-propyl, and the salts of these compounds, and herbicides containing the compounds or their salts.

Abstract: The cutoff device is provided for crane systems, especially a dredger to which a grab 1 is attached. Grab 1 has a cable 5 connected to it, which is guided over pulleys 4, 7 and kept under tension with the help of a weight 9. One of the two pulleys 4 is provided with an initiator 12 that has segments mounted on its periphery, so pulses are generated by the rotation of pulley 4 past the initiator and the drive mechanism is switched off when the pulses fail to occur.

Abstract: 1-Pyrazolines are prepared by oxidation of a 1,3-diamine with sodium hypochlorite and a peroxide in aqueous solution.

Abstract: Cyclohexane-1,3-dione derivatives of the formula ##STR1## where R.sup.1 is alkyl of from 2 to 4 carbon atoms, R.sup.2 is alkyl, unsubstituted or halogen-substituted alkenyl, or alkynyl, each of from 2 to 5 carbon atoms, R.sup.3 is a saturated or unsaturated hydrocarbon radical of up to 4 carbon atoms which is unsubstituted or substituted by 1 to 3 hydrocarbon radicals of a total of up to 8 carbon atoms, by aryl of from 6 to 10 carbon atoms, or by benzyl, R.sup.4 is, when R.sup.3 is unsaturated or olefinically or aromatically substituted, alkyl of from 1 to 6 carbon atoms, R.sup.4 is further unsubstituted or halogen-substituted alkenyl of from 2 to 6 carbon atoms, alkynyl of from 2 to 6 carbon atoms, naphthyl, arylalkyl or arylalkenyl, where aryl is of from 6 to 10 carbon atoms and is unsubstituted or substituted by alkyl or alkoxy, each of from 1 to 3 carbon atoms, or by halogen, and where alkyl or alkenyl is of from 2 to 3 carbon atoms, at least 2 of which being between aryl and sulfur, Z is H, CN, CH.sub.

Abstract: Fluorophthalimides are prepared by a process in which a fluorophthalic anhydride is reacted, in the presence of an aliphatic sulfone, with from 0.4 to 0.8 mole of urea per mole of fluorophthalic anhydride, and the reaction is carried out first at 110.degree.-140.degree. C. and then at 150.degree.-170.degree. C.

Abstract: 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.

Abstract: 5,6-Dihydro-2H-thiopyran-3-carboxaldehydes of the formula ##STR1## where R denotes hydrogen or methyl, are prepared by a method in which acrolein or crotonaldehyde is reacted with hydrogen sulfide in a mineral oil whose boiling point is higher than those of the starting materials and of the end product, and the 5,6-dihydro-2H-thiopyran-3-carboxaldehyde is obtained by distillation. These aldehydes are important intermediates for the preparation of some crop protection agents.

Abstract: Heterocyclic dihaloacetamides of the formula ##STR1## where R.sup.1 to R.sup.6, Z and n have the meanings given in the description, are antagonistic agents which increase the toleration of herbicidal acetanilides by crops.

Abstract: Novel phenylpiperazinylpropane and -butane derivatives of hetarylphenols and hetarylanilines of the formula ##STR1## where R.sup.1 is hydrogen or alkyl of 1 to 4 carbon atoms, R.sup.2 is hydrogen, halogen, alkyl of 1 to 4 carbon atoms or alkoxy where alkyl is of 1 to 3 carbon atoms, the phenyl ring can be monosubstituted or disubstituted by R.sup.2, X is oxygen or an NH group, and the heterocyclic structure Het. is 1,3,4-oxadiazolyl, triazolyl, imidazolyl or pyrazolyl, and their physiologically tolerated addition salts with acids, processes for their preparation, and pharmaceutical formulations which contain these compounds and exhibit predominantly sedative, neuroleptic and hypotensive properties.

Abstract: New and valuable 2-halo-N-(azole-1-yl-methyl)-substituted acetanilides and having a good herbicidal action, and methods of controlling the growth of unwanted plants with these compounds.

Abstract: Cyclohexane-1,3-dione deriatives of the general formula ##STR1## where R.sub.1 is cyclohexenyl or cyclohexadienyl, X is hydrogen or alkoxycarbonyl, R.sub.2 is alkyl and R.sub.3 is alkyl, alkenyl, propargyl or haloalkenyl, and salts thereof, and herbicides containing these compounds.

Abstract: Novel dichloroacetamides of the formula (I) ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, m, n, p and q have the meanings given in the description.The compounds are antagonists which increase the toleration, by crops, of herbicidal acetanilides. Herbicides containing the dichloroacetamides of the formula I in combination with acetanilides may be used for controlling undesired plant growth in Indian corn and cereals.

Abstract: 5-Fluorobenzoxazinones (I) ##STR1## where R is hydrogen, halogen, C.sub.1 -C.sub.3 -alkyl, or trifluoromethyl, trifluoromethoxy, chlorodifluoromethoxy, difluoromethoxy, tetrafluoroethoxy, trifluoromethylmercapto or chlorodifluoromethylmercapto in the m- or p-position, are prepared by reacting the corresponding benzoxazinone (II) ##STR2## in particular one which is 5-chloro-substituted or 5-bromo-substituted, with a fluoride, in particular potassium fluoride, in the presence or absence of a solvent, by a process in which the reaction is carried out in the absence of water or using previously dried starting materials, and in the presence or absence of a decomposition inhibitor, drying preferably being carried out by treatment with an acid halide, e.g. thionyl chloride, and the inhibitor used being a metal iodide, e.g. sodium iodide, or iodine.