摘要:
Process for the preparation of polyfunctional amines of the formulae by hydrogenation of the associated nitriles of the formulae with hydrogen, where A is an aromatic or aliphatic compound from the group of unsubstituted or substituted phenylene or naphthylene, methylene, unsubstituted or substituted ethylene, propylene, unsubstituted or substituted straight-chain or branched butylene, pentylene, hexylene, heptylene, octylene, nonylene, decylene and B is a straight-chain or branched aliphatic carbon chain having 1 to 10 carbon atoms, and X can be missing or is a straight-chain or branched aliphatic carbon chain having 1 to 10 carbon atoms, wherein a melt, solution or suspension of the nitrile of formula (III) or (IV) is added over the course of the reaction time to a suspension or solution of a catalyst in a solvent which comprises ammonia and is stirred at a temperature range from 60 to 150° C. under hydrogen pressure.
摘要:
A process for the preparation of polyfunctional amines of the formulae by hydrogenation of the associated nitriles of the formulae with hydrogen, where A is an aromatic or aliphatic compound from the group of unsubstituted or substituted phenylene or naphthylene, methylene, unsubstituted or substituted ethylene, propylene, unsubstituted or substituted straight-chain or branched butylene, pentylene, hexylene, heptylene, octylene, nonylene, decylene and B is a straight-chain or branched aliphatic carbon chain having 1 to 10 carbon atoms, such as methylene, unsubstituted or substituted ethylene, propylene, unsubstituted or substituted straight-chain or branched butylene, pentylene, hexylene, heptylene, octylene, nonylene, decylene, where at least one CH2 unit must be in direct vicinity to the amino group, and X can be missing or is a straight-chain or branched aliphatic carbon chain having 1 to 10 carbon atoms, such as methylene, unsubstituted or substituted ethylene, propylene, unsubstituted or substituted straight-chain or branched butylene, pentylene, hexylene, heptylene, octylene, nonylene, decylene, characterized in that a melt, solution or suspension of the nitrile of the formula (I) or (II) is added over the course of the reaction time to a suspension or solution of a catalyst in a solvent which comprises ammonia and optionally other additives and is stirred at a temperature in the range from 60 to 150° C. under hydrogen pressure, is described.
摘要:
A process for preparing solutions of sulfonated arylphosphines comprising reacting arylphosphines with oleum, diluting the sulfonation mixture with water, extracting the diluted sulfonation mixture with a solution of a water-insoluble organic solvent, reacting the organic phase with a solution of an inorganic base in water, adjusting the resulting aqueous solutin of sulfonated arylphosphines to a pH of up to 3 by addition of an acid, and passing an inert gas stream through the aqueous solution comprising sulfonated arylphosphines until sulfur is no longer liberated from the aqueous solution of sulfonated arylphosphines.
摘要:
The present invention relates to a process for the arylation of olefins by reaction of haloaromatics or arylsulfonates with olefins in the presence of a palladium catalyst, a bulky nitrogen base and a salt.
摘要:
A process for preparing sulfonated arylphosphines by reaction of arylphosphines with oleum, wherein, after reaction of the arylphosphines with oleum, the sulfonation mixture is firstly diluted with water, an inert gas stream is then passed through the diluted sulfonation mixture until SO2 is no longer liberated from the diluted sulfonation mixture and the latter is then worked up further in a customary manner and its use.
摘要:
The present invention relates to a process for the arylation of olefins by reaction of haloaromatics or arylsulfonates with olefins in the presence of a palladium catalyst, a bulky nitrogen base and a dipolar aprotic solvent.
摘要:
The present invention relates to a new copper-catalysed photochemnical cyclisation process for the preparation of bicylic molecules useful as intermediates in the manufacture of drugs. In a preferred aspect, the process of the invention may be used to prepare 3-hydroxy-bicyclo[3.2.0]heptane.
摘要:
The invention relates to a process for synthesizing tertiary phosphines by reacting halophosphines with organomagnesium compounds in the presence of copper compounds and optionally of salts.