摘要:
Oxime ethers of the general formula I ##STR1## where the variables have the following meanings: R.sup.1, R.sup.2 independently of one another hydrogen, C.sub.1 -C.sub.20 -alkyl, C.sub.4 -C.sub.10 -cycloalkyl, C.sub.6 -C.sub.10 -aryl or together a bridge of 3-14 carbon atoms, R.sup.3 hydrogen, C.sub.1 -C.sub.6 -alkyl or phenyl which is unsubstituted or carries inert substituents, n an integer from 1 to 100, A C.sub.2 -C.sub.10 -alkylene groups which are unsubstituted or carry inert substituents, a process for the preparation thereof and the use thereof as copolymerizable monomers are described.
摘要:
Preparation of a monolithium acetylide/ammonia complex by the reaction of lithium amide and acetylene in ammonia, by carrying out the reaction at a temperature of from -10.degree. to 30.degree. C.
摘要:
Preparation of N-alkenylcarboxamides of the general formula I ##STR1## where at least one of the radicals R.sup.1 is hydrogen and the second radical R.sup.1 is hydrogen or a C.sub.1 -C.sub.4 -alkyl group, the radical R.sup.2 is an aliphatic, cycloaliphatic, araliphatic or aromatic radical which can be bonded to the radical R.sup.3 to give a 3- to 10-membered bridge member, and the radical R.sup.3 is hydrogen or an aliphatic, cycloaliphatic or aromatic radical, from an alkenyl carboxylate of the general formula II ##STR2## where R.sup.1 has the meanings indicated above and R.sup.4 is hydrogen or an aliphatic, cycloaliphatic or aromatic radical, and a carboxamide of the general formula III ##STR3## where the radicals R.sup.2 and R.sup.3 have the meanings indicated above, by reacting the starting compounds in the presence of a base is described.
摘要:
Process for preparing silicon-containing vinyl ethers and vinyl thioethers of the general formula I ##STR1## where the variables have the following meanings: X is oxygen or sulfur,R.sup.1 is C.sub.1 -C.sub.20 -alkylene, C.sub.3 -C.sub.12 -cycloalkylene or C.sub.6 -C.sub.10 -arylene,R.sup.2, R.sup.3 and R.sup.4 are hydrogen, C.sub.1 -C.sub.20 -alkyl, C.sub.3 -C.sub.12 -cycloalkyl, C.sub.1 -C.sub.12 -alkoxy, phenoxy, heteroaryl or together with R.sup.1 form a C.sub.3 -C.sub.12 -cycle,by reaction of silicon-containing alcohols or thiols of the general formula II ##STR2## where the variables have the meaning indicated above, with acetylene, by carrying out the reaction in phenyl methyl sulfoxide, dimethyl sulfoxide, sulfolane or hexamethylphosphoramide in the presence of an alkali metal hydroxide.
摘要:
Preparation of vinyl carboxylates by the reaction of a carboxylic acid with acetylene in the presence of a platinum metal complex catalyst, which contains as ligands carbon monoxide or a nitrile (I), a tertiary nitrogen base (II), a tertiary phosphorus compound (III) having C-organic and/or O-organic radicals or mixtures of said compounds.The end products serve as monomers or comonomers for polymer dispersions.
摘要:
A process for the hydrogenation of an aromatic compound, in which at least one hydroxyl group is attached to an aromatic core, or an aromatic compound, in which at least one amino group is attached to an aromatic core, in the presence of a catalyst containing, as active metal, ruthenium and optionally one or more other Group IB, VIIB, or VIIIB metals, applied to a macroporous support.
摘要:
In a process for hydrogenating an aromatic compound in which at least one hydroxyl group is bonded to an aromatic ring or an aromatic compound in which at least one amino group is bonded to an aromatic ring, in the presence of a catalyst comprising as catalytically active component at least one metal of transition group I, VII or VIII of the Periodic Table applied to a support, the catalyst is obtainable bya) dissolving the catalytically active component or a precursor compound thereof in a solvent,b) admixing the solution thus obtained with an organic polymer which is able to bind at least ten times its own weight of water, giving a swollen polymer,c) subsequently mixing the swollen polymer with a catalyst support material andd) shaping, drying and calcining the composition obtained in this way.
摘要:
Hydroxyalkyl-substituted aminoalkynes of the general formula I ##STR1## where at least one of the substituents R.sup.1, R.sup.4 or R.sup.5 is hydroxyalkyl are prepared in a reaction with heterogeneous catalysis.
摘要:
A process for reacting an organic compound in the presence of a catalyst, wherein the catalyst comprises a homogeneous ruthenium compound or a mixture of two or more thereof deposited in situ on a support.
摘要:
2-Imidazolidinones are prepared by reacting 1,3-dioxalan-2-one (ethylene carbonate) with at least one compound of the formula RNH.sub.2 where R can be, inter alia, H, alkyl, aryl, heteroalkyl or heteroaryl.