Abstract: This invention relates to a new process for the preparation of pinacolone (2.2-dimethyl-3-oxobutane) of the formula(CH.sub.3).sub.3 C--CO--CH.sub.3 (I),which process comprises reacting a 2-alkoxy-2-methylbutane of the formula ##STR1## wherein R is alkyl of from 1 to 4 carbon atomswith formaldehyde at a temperature of 40.degree. to 100.degree. C., in an aqueous medium and in the presence of a strong inorganic acid.Pinacolone (I) can be used as a solvent, and also as an intermediate product in organic synthesis, for example for the production of known herbicides.

Abstract: 3,3-Dimethyl-1-phenoxy-butan-2-ols of the formula ##STR1## in which Y is a halogen atom, an optionally substituted phenyl radical, an optionally substituted phenoxy radical or a nitro, cyano, alkyl, alkoxy, alkoxycarbonyl or cycloalkyl radical, and n is 0, 1, 2 or 3,exhibit plant growth stimulating properties and are also useful in the synthesis of known fungicides. They are produced from tert-butyloxirane and the corresponding phenols.

Abstract: In the preparation of a phosphoric acid alkyl ester dichloride by reacting phosphorus oxychloride with an aliphatic alcohol according to the equation ##STR1## in which R represents C.sub.1 -C.sub.5 -alkyl,the improvement which comprises carrying out the reaction continuously at a temperature of about 10.degree. to 50.degree. C. using an excess of phosphorus oxychloride of about 5 to 40%. The excess phosphorus oxychloride is reacted with the alcohol by continuous mixing, the reaction mixture is cooled, substantially all the hydrogen chloride formed is then separated off in a preliminary degassing stage, the reaction mixture is worked up in a distillation column, the unreacted phosphorus oxychloride and any diluent is separated off over the top and condensed, the condensate is recycled to the reaction and the corresponding alkyl ester dichloride is removed continuously as the bottom product.

Abstract: N-methyl-N-(benzene sulfonic acid methylamide-N'-sulfenyl)-carbamic acid esters of the formula ##STR1## in which X is halogen, C.sub.1 -C.sub.6 alkyl or hydrogen, andR is a phenyl, naphthyl, benzodioxolanyl or indanyl radical optionally carrying at least one alkyl, alkenyl, alkynyl, alkoxy, alkenoxy, alkynoxy, alkylmercapto, alkenylmercapto, alkynylmercapto, dialkylamino, trihalogenemethyl, halogeno, nitro, nitrile, cycloalkyl, formamidino, dioxanyl or dioxolanyl radical; or an oxime radical of the formula ##STR2## in which R.sup.1 and R.sup.2 each individually is alkyl, alkoxy, alkylthio or alkoxycarbonyl, the alkyl moieties of R.sup.1 and R.sup.2 optionally being linked to one another,which possess insecticidal and acaricidal properties.

Abstract: A process for preparing monochloropinacoline (1-chloro-3,3-dimethyl-butan-2-one) by contacting a stoichiometric excess of pinacoline with chlorine at a temperature of -20.degree. to +70.degree. C.

Abstract: Sulfonic acid-N'-methylamido-N'-sulfenyl-N-methyl-carbamic acid esters of the formula ##STR1## in which R.sup.1 is dialkylamino with 1-4 carbon atoms in each alkyl group, phenyl substituted in the o- or m-position by halogen or by alkyl with 1-4 carbon atoms, or phenyl substituted in the o-, m- or p-position by NO.sub.2, CF.sub.3 or CN, andR.sup.2 is phenyl, naphthyl, benzodioxolanyl or indanyl; phenyl, naphthyl, benzodioxolanyl or indanyl substituted by trihalogenomethyl, halogen, nitro, cyano, formamidino, dioxanyl or dioxolanyl, or by alkyl, alkenyl, alkynyl, alkoxy, alkenoxy, alkynoxy, alkylmercapto, alkenylmercapto or dialkylamino wherein each hydrocarbon portion has 1-4 carbon atoms; cycloalkyl of 5-7 carbon atoms, or ##STR2## in which R.sup.3 and R.sup.4 each independently is cyano or alkyl, alkoxy, alkylthio or alkoxycarbonyl with 1-4 carbon atoms in each alkyl group, or R.sup.3 and R.sup.4 together form a ring, or, provided that R.sup.1 is a NO.sub.2 -substituted phenyl, R.sup.

Abstract: Nematicidally and arthropodicidally active N-methyl-N-(2-toluenesulphonic acid methylamide-N'-sulphenyl)-2,2-dimethyl-2,3-dihydrobenzofuranyl-(7)-carbama te of the formula ##STR1## which possesses nematicidal and arthropodicidal properties.

Abstract: N-substituted .beta.-aminocrotonic acid esters of the formula ##STR1## in which R.sup.1 is hydrogen, or alkyl or alkenyl with up to 4 carbon atoms;R.sup.2 is straight-chain or branched alkyl or alkenyl with up to 9 carbon atoms, optionally interrupted by O or S, and optionally substituted by halogen, phenoxy, dimethylamino, cyclic alkyl or alkenyl with up to 8 carbon atoms which are optionally substituted by halogen, dimethylamino, or alkyl, alkoxy or alkylthio with up to 4 carbon atoms, phenyl which is optionally substituted by halogen, dimethylamino, phenoxy, or alkyl, alkenyl, acyl, alkoxy, alkenoxy or alkynoxy containing up to 4 carbon atoms, or a 5- or 6-membered heterocyclic ring containing at least one O, S or N hetero-atom and optionally substituted by halogen, alkyl or alkoxy containing up to 4 carbon atoms or R.sub.

Abstract: N-carboxylated N-methylcarbamic acid aryl esters of the general formula ##EQU1## in which Ar is phenyl, naphthyl, dihydrobenzofuranyl or indanyl optionally substituted by alkyl, alkenyl, alkynyl, alkoxy, alkenoxy, alkynoxy, alkylmercapto, alkenylmercapto, alkynylmercapto, dialkylamino, trihalomethyl, halogen, nitro, cyano, cycloalkyl, formamidino, dioxolanyl, dioxanyl or dialkoxymethyl, andR is OAr or optionally substituted alkoxy, alkenoxy, alkynoxy, cycloalkyloxy, amino, alkylmercapto or arylmercapto,Which possess insecticidal and acaricidal properties.

Abstract: N-methyl-N-(3-trifluoromethylphenylsulfenyl)-carbonyloxime-carbamates of the formula ##STR1## in which R.sup.1 and R.sup.2 each independently is hydrogen, alkyl, alkenyl, alkynyl, alkoxy, alkylthio, alkoxycarbonyl, aminocarbonyl or alkylthioalkyl, or together are ##STR2## R.sub.3 is hydrogen or halogen, R.sub.4 is hydrogen or C.sub.1 -C.sub.4 alkyl, andX is oxygen or sulfur,Which possess insecticidal, acaricidal, nematicidal, fungicidal and bactericidal properties.

Abstract: Benzo-1,3-dioxolan-4-yl N-methyl-N-phenylmercapto-carbamates of the formula ##STR1## in which Ar is benzo-1,3-dioxolan-4-yl andR is phenyl or phenyl substituted by at least one of halogen, nitro, alkyl and trifluoromethyl,Which possess insecticidal, fungicidal and bactericidal properties.

Abstract: N-sulfenylated 2,3-dihydrobenzofuranyl-7-N-methylcarbamates of the formula ##EQU1## in which R.sup.1 is hydrogen or C.sub.1 -C.sub.6 alkyl,R.sup.2 is C.sub.1 -C.sub.6 alkyl, andR.sup.3 is phenyl; phenyl substituted by at least one of halogen, C.sub.1 -C.sub.6 alkyl and trihalogenomethyl; methoxycarbonyl; or the radical ##EQU2## wherein R.sup.4 is alkylamino, dialkylamino, phenyl, or phenyl substituted by at least one of halogen, C.sub.1 -C.sub.6 alkyl or trihalogenomethyl,Which possess insecticidal and acaricidal properties.

Abstract: N-methyl-N-alkoxycarbonylsulphenyl-carbamates of the formula ##EQU1## in which R.sup.1 is C.sub.1.sub.-6 alkyl, andR.sup.2 is phenyl; naphthyl; indanyl; phenyl, naphthyl or indanyl substituted by trihalomethyl, halogen, nitro, nitrile, dioxanyl, dioxolanyl, methyl-dioxanyl, methyl-dioxolanyl, alkyl, cycloalkyl, alkenyl, alkynyl, alkoxy, dialkoxymethyl, alkenoxy, alkynoxy, alkylmercapto, alkenylmercapto, alkynylmercapto or dialkylamino, with up to 6 carbon atoms in each alkyl, alkenyl or alkynyl group; a radical of the formula ##EQU2## in which R.sup.3 and R.sup.4 are each alkyl, alkylthio, nitrile or phenyl; or ##EQU3## in which R.sup.5 is hydrogen or C.sub.1.sub.-6 alkyl, which possess insecticidal, acaricidal, fungicidal, nematocidal and bactericidal properties.

Abstract: N-methyl-N-(benzene sulfonic acid methylamide-N'-sulfenyl)-carbamic acid esters of the formula ##SPC1##In whichX is halogen, C.sub.1 -C.sub.6 alkyl or hydrogen, andR is a phenyl, naphthyl, benzodioxolanyl or indanyl radical optionally carrying at least one alkyl, alkenyl, alkynyl, alkoxy, alkenoxy, alkynoxy, alkylmercapto, alkenylmercapto, alkynylmercapto, dialkylamino, trihalogenomethyl, halogeno, nitro, nitrile, cycloalkyl, formamidino, dioxanyl or dioxolanyl radical; or an oxime radical of the formula ##EQU1## in which R.sup.1 and R.sup.2 each individually is alkyl, alkoxy, alkylthio or alkoxycarbonyl, the alkyl moieties of R.sup.1 and R.sup.2 optionally being linked to one another,Which possess insecticidal and acaricidal properties.

Abstract: N-sulfenylated-N-methyl-carbamic acid esters of 2-oximino-alkanecarboxylic acid nitriles of the formula ##EQU1## in which R.sub.1 is alkyl, cycloalkyl, or alkyl-substituted cycloalkyl, andR.sub.2 is a C.sub.1-8 aliphatic radical substituted by halogen; aryl; aryl substituted by halogen, methyl, trifluoromethyl or nitro; or the radical of the formula ##EQU2## wherein R.sub.3 is alkyl, andR.sub.4 is alkyl, haloalkyl, aryl, or aryl substituted by halogen, methyl or nitro,Which possess insecticidal, acaricidal, fungicidal and bactericidal properties.