Abstract:
The invention relates to the acyl- and bisacylphosphine derivatives according to formula (I), wherein Y represents O, S, NR3, N-OR3 or N-NR3R4, Z represents O, S, NR3, N-OR3, N-NR3R4 or a free pair of electrons, and FG represents a leaving group and the remaining groups are defined as in the description. The invention further relates to a method for the production of the inventive derivatives and to their use.
Abstract translation:根据式I,其中Y是酰基和二酰基膦衍生物O,S,NR 3,N-OR 3或N-NR 3 R 4,Z是O,S,NR 3,N-NR 3 R 4,或自由电子对,和FG是指离去基团,并且其它基团如在所描述的 刚才提到的含义,其制备方法及其用途。
Abstract:
Disclosed is a method for separating acids from chemical reaction mixtures by means of an auxiliary base. Said auxiliary base b) forms a salt with the acid, which is liquid at temperatures at which the valuable product is not significantly decomposed during separation, and c) the salt of the auxiliary base and the valuable product or the solution of the valuable product form two immiscible fluid phases in a suitable solvent.
Abstract:
Procedimiento para separar ácidos de mezclas de reacción mediante una base auxiliar, en donde: a) la base auxiliar forma una sal con el ácido, cuya sal es líquida a temperaturas a las que el producto de valor no es descompuesto significativamente durante la separación de la sal líquida; y b) la sal de la base auxiliar forma con el producto de valor o la solución del producto de valor en un disolvente apropiado dos fases líquidas no miscibles entre sí. La base auxiliar c) actúa simultáneamente como catalizador nucleófilo, y la sal de la base auxiliar tiene un punto de fusión por debajo de 160°C. En dicho procedimiento se usa una base, que es seleccionada de entre las fórmulas (a) a (r), en donde: R1, R2, R3, R4, R5 y R6 significan, independientemente, hidrógeno, alquilo C1-18, alquilo C2-18, arilo C6-12, cicloalquilo C5-12 eventualmente interrumpidos por uno o varios átomos de oxígeno y/o átomos de azufre y/o uno o varios grupos imino sustituidos o no sustituidos, o un heterociclo de 5 a 6 miembros que presenta átomos de oxígeno, nitrógeno y/o átomos de azufre, cuyos radicales mencionados pueden estar sustituidos en cada caso por grupos funcionales, arilo, alquilo, ariloxi, alquiloxi, halógeno, heteroátomos y/o heterocicleno. Uso de una fosfina, de ésteres de ácido fosfínico, ésteres de ácido fosfinoso (fosfinitas), ésteres de ácido fosfónico, haluros de ácido fosfónico, amidas de ácido fosfónico, ésteres de ácido fosfonoso (fosfonitas), amidas de ácido fosfonoso, haluros de ácido fosfonoso, ésteres de ácido fosfórico, haluros de diésteres de ácido fosfórico, amidas de diésteres de ácido fosfórico, dihaluros de ésteres de ácido fosfórico, diamidas de ésteres de ácido fosfórico, ésteres de ácidos fosforosos (fosfitas), haluros de diésteres de ácido fosforoso, amidas de diésteres de ácido fosforoso, dihaluros de ésteres de ácido fosforoso o de diamidas de ésteres de ácido fosforoso, obtenidos según el procedimiento descripto como ligandos para catalizadores.
Abstract:
The invention relates to the acyl- and bisacylphosphine derivatives according to formula (I), wherein Y represents O, S, NR3, N-OR3 or N-NR3R4, Z represents O, S, NR3, N-OR3, N-NR3R4 or a free pair of electrons, and FG represents a leaving group and the remaining groups are defined as in the description. The invention further relates to a method for the production of the inventive derivatives and to their use.
Abstract:
Process for preparing aminodihalophosphines, diaminohalophosphines, triaminophosphines, phosphorous ester diamides, aminophosphines, diaminophosphines, phosphorous ester amide halides and aminophosphine halides with elimination of an acid in the presence of an auxiliary base, wherein the auxiliary base b) and the acid form a salt which is liquid at temperatures at which the desired product is not significantly decomposed during the process of separating off the liquid salt and c) the salt of the auxiliary base forms two immiscible liquid phases with the desired product or the solution of the desired product in a suitable solvent.
Abstract:
A process for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of an n-butene-containing hydrocarbon stream by means of oxygen-containing gases in a shell-and-tube reactor having two successive reaction zones, where the first, feed-side reaction zone contains at least one catalyst which is suitable for the oxydehydrogenation of n-butenes to 1,3-butadiene and the second, product-side reaction zone contains at least one catalyst which is suitable for the oxidation of 1,3-butadiene to maleic anhydride, is carried out using a shell-and-tube reactor which has at least one heat transfer medium circuit in the region of the first, feed-side reaction zone and at least one further heat transfer medium circuit in the region of the second, product-side reaction zone.
Abstract:
Process for preparing aminodihalophosphines, diaminohalophosphines, triaminophosphines, phosphorous ester diamides, aminophosphines, diaminophosphines, phosphorous ester amide halides and aminophosphine halides with elimination of an acid in the presence of an auxiliary base, wherein the auxiliary base b) and the acid form a salt which is liquid at temperatures at which the desired product is not significantly decomposed during the process of separating off the liquid salt and c) the salt of the auxiliary base forms two immiscible liquid phases with the desired product or the solution of the desired product in a suitable solvent.
Abstract:
Process for preparing aminodihalophosphines, diaminohalophosphines, triaminophosphines, phosphorous ester diamides, aminophosphines, diaminophosphines, phosphorous ester amide halides and aminophosphine halides with elimination of an acid in the presence of an auxiliary base, wherein the auxiliary base b) and the acid form a salt which is liquid at temperatures at which the desired product is not significantly decomposed during the process of separating off the liquid salt and c) the salt of the auxiliary base forms two immiscible liquid phases with the desired product or the solution of the desired product in a suitable solvent.
Abstract:
Disclosed is a method for separating acids from chemical reaction mixtures b y means of an auxiliary base. Said auxiliary base b) forms a salt with the aci d, which is liquid at temperatures at which the valuable product is not significantly decomposed during separation, and c) the salt of the auxiliary base and the valuable product or the solution of the valuable product form t wo immiscible fluid phases in a suitable solvent.