摘要:
Benzene derivatives of the general formula ##STR1## where Hal is halogen, R.sup.1 is a hydrocarbon radical of 1 to 18 carbon atoms, R.sup.2 is hydrogen or alkyl of 1 to 6 carbon atoms and X is hydrogen or halogen, are prepared by a process in which a toluene derivative of the general formula ##STR2## is electrochemically oxidized in the presence of an acid of the formula R.sup.2 --COOH (III). Novel benzene derivatives of the general formula ##STR3## where R.sup.3 is hydrogen or an R.sup.2 --CO-- radical but R.sup.1 cannot be methyl if X is hydrogen, and of the general formula ##STR4## where R.sup.4 is a branched or cyclic alkyl radical of 3 to 12 carbon atoms, but R.sup.4 cannot be isopropyl if X is hydrogen. The compounds of formulas IV and VI are intermediates for crop protecting agents, e.g. pyrethroids.
摘要:
A process for the preparation of benzaldehyde dialkyl acetals of the general formula ##STR1## where R.sup.1 is alkyl of 1 to 6 carbon atoms, R.sup.2, R.sup.3 and R.sup.4 are hydrogen or halogen, straight-chain, branched or cyclic hydrocarbon radicals or alkoxy, acyloxy, aryloxy or aralkoxy, and n is 1 or 2, in which benzyl derivatives of the general formula ##STR2## where R.sup.2, R.sup.3, R.sup.4 and n have the abovementioned meanings, R.sup.5 is hydrogen or R.sup.6 --CO--, and R.sup.6 is hydrogen or alkyl of 1 to 6 carbon atoms, are anodically oxidized in the presence of an alcohol of the formula R.sup.1 --OH where R.sup.1 has the abovementioned meaning.
摘要:
Benzyl esters of the formula I ##STR1## where R.sup.1 is methyl, ethyl, halogen, methoxy or ethoxy, R.sup.2 is alkyl, alkenyl, cycloalkyl, cycloalkenyl, bicycloalkyl, bicycloalkenyl, C.sub.1 -C.sub.5 -alkyl-substituted cycloalkyl, C.sub.1 -C.sub.5 -substituted cycloalkenyl, C.sub.1 -C.sub.5 -alkyl-substituted bicycloalkyl or C.sub.1 -C.sub.5 -alkyl-substituted bicycloalkenyl, R.sup.3 is hydrogen, cyano, C.sub.2 -C.sub.4 -alkynyl, C.sub.2 -C.sub.4 -alkenyl or C.sub.1 -C.sub.4 -alkyl, A is the carboxylate radical of an acid component typical for pyrethroids and X is hydrogen or halogen, with the proviso that R.sup.2 is not CH.sub.2 --CH.dbd.CH--B when B is hydrogen, alkyl or alkenyl and at the same time R.sup.1 is methyl or halogen, and furthermore with the proviso that R.sup.2 is not methyl when R.sup.1 is methyl, their manufacture, their use for combating pests, and precursors for manufacturing the benzyl esters.
摘要:
Aliphatically substituted fluorobenzenes of the general formula I ##STR1## where R is an aliphatic or cycloaliphatic radical, n is 2, 3 or 4 and X is hydrogen, fluorine, chlorine or bromine, are prepared by diazotization of the corresponding aniline derivative of the general formula II ##STR2## in the presence of tetrafluoboric acid and decomposition of the resulting diazonium tetrafluoborate of the general formula III ##STR3## by a process in which the decomposition reaction is carried out simultaneously with the diazotization reaction, in the presence of elemental copper and/or copper(I) and/or copper(II) salts and at from -15.degree. to 80.degree. C.
摘要:
Cyclohexenone oxime ethers of the general formula I ##STR1## where R.sup.1 is C.sub.1 -C.sub.6 -alkyl, A is substituted or unsubstituted C.sub.4 -alkylene or C.sub.4 -alkenylene,x is nitro, cyano, halogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkylthio, C.sub.1 -C.sub.4 -haloalkyl, C.sub.1 -C.sub.4 -haloalkoxy, carboxyl, C.sub.1 -C.sub.4 -alkoxycarbonyl, substituted or unsubstituted benzyloxycarbonyl and/or phenyl,n is from 0 to 3 or from 1 to 5 when X is halogen,R.sup.2 is C.sub.1 -C.sub.6 -alkoxy-C.sub.1 -C.sub.6 -alkyl or C.sub.1 -C.sub.4 -alkylthio-C.sub.1 -C.sub.6 -alkyl, substituted or unsubstituted C.sub.3 -C.sub.7 -cycloalkyl or C.sub.5 -C.sub.7 -cycloalkenyl,a substituted or unsubstituted 5-membered saturated heterocyclic radical which contains one or two oxygen and/or sulfur atoms as heteroatoms,a substituted or unsubstituted 6- or 7-membered heterocyclic radical which contains one or two oxygen and/or sulfur atoms and one or two double bonds,a substituted or unsubstituted 5-membered heteroaromatic radical containing one or two nitrogen atoms and an oxygen or a sulfur atom,substituted or unsubstituted phenyl or pyridyl,and their agriculturally useful salts and esters of C.sub.1 -C.sub.10 -carboxylic acids and inorganic acids, methods of manufacturing them, and their use as herbicides.
摘要:
A process for the preparation of a 2,3-dihydrobenzofuran I ##STR1## or a derivative thereof, where R.sup.a and R.sup.b are C-organic radicals, involves reacting a 2-hydroxybenzyl alcohol II ##STR2## in the presence of an acidic ion exchanger resin and in the presence of an inert dehydrating substance. Novel 2,3-dihydrobenzofurans Ia, 2-acylphenols IVa and 2-hydrox-ybenzyl alcohols IIa, a process for their preparation, and their use as intermediates are also described.
摘要翻译:制备2,3-二氢苯并呋喃I或其衍生物的方法,其中Ra和Rb是C-有机基团,包括在酸性存在下使2-羟基苄醇II II 离子交换树脂,并在惰性脱水物质的存在下进行。 还描述了新的2,3-二氢苯并呋喃Ia,2-酰基苯酚IVa和2-羟基 - 苄基醇IIa,其制备方法及其作为中间体的用途。
摘要:
Hydroxylamine derivatives have the general formula IAryl--A--O--B IwhereAryl is an unsubstituted or substituted, mononuclear or binuclear, isocyclic radical;A is a 1,4-butenylene group of the general formulae IIa or IIb ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are each hydrogen, halogen, C.sub.1 -C.sub.6 -alkyl or C.sub.1 -C.sub.6 -alkenyl;B is NH.sub.2 or a dicarboximide group of the general formula III ##STR2## where Z is unsubstituted or substituted phenylene, naphthylene, pyridinylene, cyclopentylene, cyclohexylene, cyclohexenylene, C.sub.2 -C.sub.4 -alkenylene or C.sub.2 -C.sub.4 -alkylene. The dicarboximides are intermediates for the compounds wherein B is NH.sub.2. The latter are used in synthesizing herbicidal compounds.
摘要:
A dispersion or solution of a free radical polymer, polycondensate or polyadduct, which consist of from 0.001 to 20% by weight of aldehyde groups --CHO or keto groups --CO--, contains, as a crosslinking agent, a compound having at least two H.sub.2 N--O---groups or oxime ether groups derived therefrom.
摘要:
Cyclohexenone oxime ethers of the general formula I ##STR1## where R.sup.1 is C.sub.1 -C.sub.6 -alkyl, A is substituted or unsubstituted C.sub.4 -alkylene or C.sub.4 -alkenylene,X is nitro, cyano, halogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkylthio, C.sub.1 -C.sub.4 -haloalkyl, C.sub.1 -C.sub.4 -haloalkoxy, carboxyl, C.sub.1 -C.sub.4 -alkoxycarbonyl, substituted or unsubstituted benzyloxycarbonyl and/or phenyl,n is from 0 to 3 or from 1 to 5 when X is halogen,R.sup.2 is C.sub.1 -C.sub.4 -alkoxy-C.sub.1 -C.sub.6 -alkyl or C.sub.1 -C.sub.4 -alkythio-C.sub.1 -C.sub.6 -alkyl, substituted or unsubstituted C.sub.3 -C.sub.7 -cycloalkyl or C.sub.5 -C.sub.7 -cycloalkenyl,a substituted or unsubstituted 5-membered saturated heterocyclic radical which contains one or two oxygen and/or sulfur atoms as heteroatoms,a substituted or unsubstituted 6- or 7-membered heterocyclic radical which contains one or two oxygen and/or sulfur atoms and one or two double bonds,a substituted or unsubstituted 5-membered heteroaromatic radical containing one or two nitrogen atoms and an oxygen or a sulfur atom,substituted or unsubstituted phenyl or pyridyl,and their agriculturally useful salts and esters of C.sub.1 -C.sub.10 -carboxylic acids and inorganic acids, methods of manufacturing them, and their use as herbicides.
摘要:
A process for the preparation of a 2,3-dihydrobenzofuran I ##STR1## or a derivative thereof, where R.sup.a and R.sup.b are C-organic radicals, involves reacting a 2-hydroxybenzyl alcohol II ##STR2## in the presence of an acidic ion exchanger resin and in the presence of an inert dehydrating substance. Novel 2,3-dihydrobenzofurans Ia, 2-acylphenols IVa and 2-hydroxybenzyl alcohols IIa, a process for their preparation, and their use as intermediates are also described.
摘要翻译:制备2,3-二氢苯并呋喃I或其衍生物的方法,其中Ra和Rb是C-有机基团,包括在酸性存在下使2-羟基苄醇II II 离子交换树脂,并在惰性脱水物质的存在下进行。 还描述了新的2,3-二氢苯并呋喃Ia,2-酰基苯酚IVa和2-羟基苄醇IIa,其制备方法及其作为中间体的用途。