摘要:
Acyl chlorides of the general formula ##STR1## where R is C.sub.8 -C.sub.30 -alkyl, C.sub.8 -C.sub.30 -alkenyl or C.sub.8 -C.sub.30 -alkynyl, are prepared from a carboxylic acid of the general formula II ##STR2## where R has the abovementioned meanings, and phosgene, COCl.sub.2 (III), in the presence of a catalyst adduct of phosgene and N,N-dialkylformamide of the general formula IV ##STR3## where R.sup.1 and R.sup.2 independently of one another are each C.sub.1 -C.sub.3 -alkyl, preferably a 1:1 adduct in excess N,N-dialkylformamide, the reaction product I being obtained by phase separation, by a process in which II and III are used in essentially equimolar amounts and the phase containing the catalyst adduct is reused.
摘要:
The preparation of 1-hydroxyimidazoles of the formula I ##STR1## where the R radicals can be identical or different and are each halogen or an organic radical, it also being possible for vicinal radicals to be connected to form an aromatic or nonaromatic ring of from 3 to 12 carbon atoms, and n is from 0 to 3, entails reacting an imidazole of the formula II ##STR2## where Q is preferably hydrogen or, especially where R is not halogen, an alkali metal or alkaline earth metal cation, with an organic peroxide.The products are valuable intermediates for organic syntheses.
摘要:
Moldings, in particular foams and fibers, based on melamine/formaldehyde condensation products, in which from 0.1 to 70 mol% of the melamine have been replaced by melamine substituted by from 1 to 3 hydroxyoxaalkyl groups of the formula--(CH.sub.2 --CH.sub.2 --O).sub.n --CH.sub.2 --CH.sub.2 --OH (n=1-5)have increased elasticity.
摘要:
4-Chloropyrazoles of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each independently of the others hydrogen or a radical which is inert under the reaction conditions, are prepared by reacting pyrazoles of the general formula II ##STR2## wherein R.sup.1, R.sup.2 and R.sup.3 are each as defined above, with 0.95-10 equivalents of hypochloric acid, or salts thereof, in the substantial absence of any carboxylic acid.
摘要:
Compounds of the general formula ##STR1## where 5 R is alkyl or substituted or unsubstituted aryl,X is C.dbd.O or CHOH and derivatives thereof,Y is hydrogen, alkyl, alkoxy, halogen, aryl or aryloxy, andn is 1 to 5,and fungicides containing these compounds.
摘要:
Compounds of the general formula ##STR1## where X is CH.sub.2 or O, Y is hydrogen, alkyl, alkoxy, halogen, aryl or aryloxy and n is from 1 to 5, and their salts and complexes, and fungicides containing these compounds.
摘要:
Substituted N-hydroxypyrazoles of the general formula ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are identical or different and are hydrogen, alkyl, haloalkyl, cycloalkyl, alkoxycarbonyl, halogen, aryl or arylalkyl, the aromatic ring being unsubstituted or substituted,or R.sup.2 and R.sup.3 form, with the pyrazole ring, a substituted or unsubstituted aromatic or aliphatic ring,X is CH or N, and their plant-tolerated acid addition salts and metal complexes,and fungicides containing these compounds.
摘要:
New 4-nitro-2-trichloromethylphenylsulfenamides having a fungicidal and bactericidal action, processes for their manufacture, fungicides containing these compounds as active ingredients, and a process for combating fungi with these compounds.
摘要:
New 2-trichloromethyl-4-nitrobenzenesulfenic acid derivatives having a fungicidal and bactericidal action, agents for combatting fungi and bacteria containing these compounds as active ingredients, processes for combatting fungi and bacteria with these active ingredients, and processes for their manufacture. Of particular interest are 2-trichloromethyl-4-nitrobenzenesulfenic acid chloride and 2-trichloromethyl-4-nitrophenyl thiocyanate.
摘要:
A fungicidal composition for wood preservation containing derivatives of heavy metal salts of N-nitroso-N-cyclohexylhydroxylamine, and a process for combatting fungi with these derivatives.