摘要:
A process for the preparation of N,N-dimethyl-N'-(2-bromo-4-methyl-phenyl)-triazene of the formula ##STR1## comprising (a) reacting N-acetyl-p-toluidine of the formula ##STR2## with bromine at a temperature between about 0.degree. and 100.degree. C., to give the intermediate product of the formula ##STR3## (b) reacting the intermediate product with hydrochloric acid by either (i) adding a dilute solution of aqueous hydrochloric acid to the intermediate product in its reaction solution and heating the mixture to a temperature between about 50.degree. and 120.degree. C., or(ii) precipitating the intermediate product from its reaction solution by mixing with water and filtering off, and without purification or drying heating the precipitate with dilute aqueous hydrochloric acid to a temperature between about 50.degree. and 120.degree. C., thereby to form a solution of 2-bromo-4-methylaniline hydrochloride, (c) reacting the resulting aqueous solution with an alkali metal nitrite at a temperature between about -20.degree. and +30.degree. C., and (d) reacting the product with dimethylamine at a temperature between about 0.degree. and 50.degree. C.
摘要:
Novel substituted N-(p-aminophenyl)-N'-benzoyl ureas of the formula ##STR1## wherein each of R.sub.1 and R.sub.2 independently is C.sub.1 -C.sub.4 alkyl or C.sub.3 -C.sub.5 alkenyl, each of R.sub.3 and R.sub.4 independently is chlorine or bromine, and each of R.sub.5 and R.sub.6 independently is hydrogen, fluorine or chlorine, with the proviso that R.sub.5 and R.sub.6 are not both simultaneously hydrogen, processes for the manufacture of these compounds and compositions containing them for use in pest control, especially for controlling insects harmful to plants and animals. The novel compounds inhibit feeding damage and have in particular a pronounced ovolarvicidal and ovicidal action against plant-destructive insects.
摘要:
The invention relates to novel ortho-aminoacetophenones of the formula I ##STR1## and their tautomers, in which Z is hydrogen, halogen, lower alkyl, cycloalkyl, lower alkoxy, trifluoromethyl, nitro or substituted or unsubstituted sulphamoyl, m is 1 or 2, R is hydrogen, aryl or lower alkyl, R.sub.1 is hydrogen or lower alkyl, R.sub.2 is lower alkyl, cycloalkyl, aryl, cycloalkyl-lower alkyl, aryl-lower alkyl or substituted or unsubstituted pyridyl, R.sub.3 is hydrogen or lower alkyl and n is 1 or 2, with the exception of 2'-[N-(p-methoxyphenyl)-amino]-2-(methyl-sulphinyl)-acetophenone, 2'-amino-2-(methylsulphinyl)-acetophenone, 2'-amino-5'-chloro-2-(methylsulphinyl)-acetophenone, 2'-methylamino-2-(methylsulphinyl)-acetophenone, 2'-amino-5'-methyl-2-(methylsulphinyl)-acetophenone, 2'-amino-4'-chloro-2-(methylsulphinyl)-acetophenone, 2'-amino-6'-chloro-2-(methylsulphinyl)-acetophenone, 2'-amino-5',6'-dimethoxy-2-(methylsulphinyl)-acetophenone and 2'-amino-4',5'-dimethoxy-2-(methylsulphinyl)-acetophenone, and also to their salts.These compounds have a fibrinolytic and an antiinflammatory action.
摘要:
Analines, meta-substituted by chlorine are prepared by reacting chloro-anilines having the formula ##STR1## wherein X.sup.1 and X.sup.2 are the same or different and represent chlorine, hydrogen or optionally substituted alkyl, aryl, aralkyl, alkoxy or aralkoxy, with one of the radicals X.sup.1 or X.sup.2 representing chlorine when 3-chloroanilines are being prepared andX.sup.1 and X.sup.2 representing chlorine when 3,5-dichloroanilines are being prepared andR.sup.1, R.sup.2 and R.sup.3 are the same or different and represent chlorine, hydrogen or optionally substituted alkyl, aryl, aralkyl, alkoxy or aralkoxy, with at least one of the radicals R.sup.1, R.sup.2 or R.sup.3 representing chlorinewith hydrogen in solution in a neutral or acid medium in the presence of noble metals which are in the elementary form or in the form of compounds and are optionally applied to supports, and in the presence of sulfur or sulfur compounds at elevated temperatures and under pressure.
摘要:
4-Nitro-4'-[N-(N'-benzoyl)-ureido]-diphenyl ethers of the general formula ##STR1## in which R is chlorine, fluorine or methyl,R' is hydrogen, chlorine or fluorine, andR" and R'" are identical and are each hydrogen or chlorine, but if R is chlorine and R' is hydrogen, R" and R'" can only be hydrogen,Which possess insecticidal properties.
摘要:
Described is the process of interconverting p-iodoaniline and o-iodoaniline, particularly converting p-iodoaniline to o-iodoaniline overall, by heating the former in the presence of aniline and, optionally, a mineral or organic acid.
摘要:
Aminobenzaldehyde compounds and a process for their production by the reaction of an aniline with a formamide in the presence of an acid halide with or without a following reaction with a nitrogen compound. The products are starting materials for the production of optical brighteners, dyes, plant protection agents and medicaments.
摘要:
N-Substituted 2,6-dinitro-3-alkoxyanilines having a halo, lower alkyl, or trifluoromethyl substituent at the 4-position. The compounds are useful as pre- or post-emergence herbicides and can be formulated with the usual herbicide carriers.