Abstract: There is described a process for producing N-chlorosulfenyl compounds of the formula ##STR1## in which R.sub.1 is alkyl, alkoxycarbonyl, alkoxycarbonylalkyl or 2,3-dihydro-2,2-dimethylbenzofuran-7-yloxycarbonyl, and R.sub.2 is alkyl or alkoxycarbonylalkyl, which process is based on the reaction of an amino compound of the formula ##STR2## with sulfur dichloride. The essential feature of the process is that the reaction of the amino compound of the above formula with the sulfur dichloride is performed in excess sulfur dichloride as solvent and in the absence of a base. The formed N-chlorosulfenyl compounds of the above formula are intermediates for insecticidal and acaricidal active substances.

Abstract: Production of 2-chloropyridines of the formula I ##STR1## wherein R independently of one another is C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -halogenalkyl, halogen or carboxyl andn is zero or a number from one to four, with the proviso that at most two substituents R can be alkyl, halogenoalkyl or carboxyl at the same time, and that if R is chlorine and n is two, one of them must not occupy the 3- or 5-position of the pyridine ring, by reacting a 2-pyridone of the formula (II) ##STR2## wherein R and n have the meanings given above at 30.degree.-150.degree. C. with phosgene in the presence of an N,N-disubstituted formamide of the formula III ##STR3## in which R.sub.1 and R.sub.2 can be identical or different and are each an alkyl group having 1 to 4 carbon atoms, or R.sub.1 and R.sub.2 together with the nitrogen atom form the pyrrolidino, piperidino or morpholino ring, and in the presence of an inert solvent.2-chloropyridines are valuable intermediates for producing herbicidally active .alpha.

Abstract: Production of 2,3,5-trichloropyridine by reacting 3,5-dichloro-2-pyridone at 30.degree. to 150.degree. with phosgene in the presence of an N,N-disubstituted formamide of the formula ##STR1## in which R.sub.1 and R.sub.2 can be identical or different and are each an alkyl group having 1 to 4 carbon atoms, or R.sub.1 and R.sub.2 together with the nitrogen atom form the pyrrolidino, piperidino or morpholino, and in the presence of an inert solvent.2,3,5-Trichloropyridine is a valuable intermediate for producing herbicidally active .alpha.-[4-(3',5'-dichloropyrid-2-yloxy)-phenoxy]-alkanecarboxylic acids and derivatives thereof.

Abstract: Novel substituted 1,3-benzodithiol-2-N,N-dialkyliminium salts of the formula ##STR1## wherein R.sub.1 and R.sub.2 independently of one another are each hydrogen, C.sub.1 -C.sub.5 -alkyl, C.sub.3 -C.sub.6 -cycloalkyl, C.sub.3 -alkenyl, C.sub.3 -C.sub.5 -alkynyl or the radical --(CH.sub.2).sub.n --OR, in which R is C.sub.1 -C.sub.4 -alkyl, and n is the number 2 or 3; R.sub.3 and R.sub.4 independently of one another are each C.sub.1 -C.sub.4 -alkyl, or together they are the radical --(CH.sub.2).sub.4 -- or --(CH.sub.2).sub.5 --; and X.sup..crclbar. is a molar equivalent of an anion of an inorganic or organic acid; processes for producing these compounds, as well as compositions containing them, and their use for combating pests, particularly for combating members of the order Acarina which infest plants and animals. The novel compounds are distinguished by their special effectiveness against mites which damage plants.

Abstract: Production of 2,3,5-trichloropyridine by reacting 3,5-dichloro-2-pyridone at 30.degree. to 150.degree. with phosgene in the presence of an N,N-disubstituted formamide of the formula ##STR1## in which R.sub.1 and R.sub.2 can be identical or different and are each an alkyl group having 1 to 4 carbon atoms, or R.sub.1 and R.sub.2 together with the nitrogen atom form the pyrrolidino, piperidino or morpholino, and in the presence of an inert solvent.2,3,5-trichloropyridine is a valuable intermediate for producing herbicidally active .alpha.-[4-(3',5'-dichloropyrid-2-yloxy)-phenoxy]-alkanecarboxylic acids and derivatives thereof.

Abstract: A process for producing hydroxydiaryl ethers of the formula ##STR1## wherein R respesents an alkyl group having 1 to 4 carbon atoms or chlorine, n represents 0, 1, 2, 3 or 4, and X represents a phenyl group of the formula II ##STR2## or a 2-pyridinyl group or a 4-pyridinyl group of the formulae ##STR3## wherein R.sub.1, R.sub.2 and R.sub.3 each represent hydrogen, an alkyl group having 1 to 4 carbon atoms, an alkyl group which has 1 to 4 carbon atoms and which is mono- or disubstituted by halogen, phenyl, halogen, carboxyl, alkoxycarbonyl having 1 to 4 carbon atoms in the alkyl group, trifluoromethyl, nitro, cyano or benzoyl, R.sub.4 and R.sub.5 each represent hydrogen, an alkyl group having 1 to 4 carbon atoms or phenyl, and R.sub.6 has all the meanings given, with the exception of halogen, for R.sub.1, R.sub.2 and R.sub.3 is disclosed.

Abstract: A process for the production of benzofurazan-1-oxides by reacting a 2-nitroaniline with alkali metal hypochlorite is disclosed which process comprises the performance of the reaction of the 2-nitroaniline with the alkalimetal hypochlorite in a two-phase reaction medium consisting of water and an organic solvent immiscible with water, in the presence of a phase-transfer catalyst.