Abstract:
A process for producing a 1,3,2-dioxaborinane compound of the general formula (I) in which each R individually is selected from the group consisting of H and C1-6-alkyl, by reacting a diol of the general formula (II) HO-CRR-CRR-CRR-OH with diborane is performed without using a solvent.
Abstract:
Use of compounds of general formula (I) or (II) as markers for liquids, where R1- R6 and R11- R18 independently, identically or differently represent H, C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkinyl, C3-C15 cycloalkyl, aryl, aryloxy, heterocycles, halogen, NR7R8, CN, NO2, CONR7R8, OR9, COR9, COOR9, SO3R9; R7 - R9 independently, identically or differently represent H, C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkinyl, C3-C15 cycloalkyl, aryl, and where one or more C atoms in any position in the aromatic ring, along with the respective substituent R1- R6 and R11- R18, can be identically or differently substituted by N, O, or S atoms, wherein preferably no more than 3, especially preferably no more than 2, and in particular no more than 1 C atom(s) in formulae (I) or (II) is/are substituted, and wherein substituents R1- R6, R7 - R9, R11 - R18 can be interrupted in any position by one or more, but no more than 10, preferably no more than 8, especially preferably no more than 5, and in particular no more than 3 heteroatoms, and/or can be substituted in any position, but no more than five times, preferably no more than four times, and especially preferably no more than three times, by NR7R8, CONR7R8, COR9, COOR9, SO3R9, CN, NO2, C1-C20 alkyl, C1-C20 alkoxy, aryl, aryloxy, heterocycles, heteroatoms, or halogen, wherein the same can also be substituted up to twice, preferably no more than once, by said groups, provided that at least two of substituents R1- R6 in formula (I) represent COOR9, wherein the presence of the marker is detected using a method allowing markers of general formula (I) to be distinguished from other compounds of general formula (I) if exactly two of substituents R1- R6 represent COOR9, and provided that at least two of substituents R11 - R18 represent COOR9 in formula (II).
Abstract:
In a process for the accelerated reduction of organic substrates, selected from the group consisting of esters, amides, nitriles, acids, ketones, imines or mixtures thereof, they are reacted with an amine borane, sulfide borane or ether borane complex as a borane source in the presence of organic accelerator compounds containing either Lewis acidic or Lewis basic sites in their structure, of which the Lewis acidic site can coordinate with the carbonyl or nitrile or imine group of the substrate or the Lewis basic site can coordinate with the borane.
Abstract:
Uso de una mezcla, que comprende (A) del 5 al 95 % en peso de al menos un compuesto de nitrógeno polar, soluble en aceite y distinto delcomponente (B), que está en condiciones de interaccionar, con cristales de parafina en frío en combustiblesdestilados medios, y se selecciona entre productos de reacción de un ácido dicarboxílico aromático ocicloalifático o de un ácido succínico sustituido con restos hidrocarburo C8 a C30 con 2 moles de aminasprimarias o secundarias con al menos 8 átomos de carbono, y (B) del 5 al 95 % en peso de una mezcla de dos compuestos alifáticos solubles en aceite (B1) y (B2), quecontiene en cada caso al menos una cadena de alquilo o de alquenilo lineal o ramificada con al menos 8 átomosde carbono, que pueden obtenerse mediante reacción de un ácido monocarboxílico o dicarboxílico alifático osus derivados con monoaminas o poliaminas o con alcoholes, representando (B1) productos de reacción de ácidos a,b-dicarboxílicos alifáticos con 4 a 300 átomos de carbono o susderivados con alquilmonoaminas o alquenilmonoaminas primarias C8 a C30 y (B2) amidas de ácido solubles en aceite a partir de poliaminas con 2 a 1000 átomos de nitrógeno y ácidosgrasos C8 a C30 o compuestos análogos a ácidos grasos que contienen grupos carboxilo, para la reducción del punto de enturbamiento ("CP") en combustibles destilados medios, que antes de la adición deaditivos presentan un valor de CP de -8,0 ºC o más bajo, en al menos 1,5 ºC con respecto al combustible destiladomedio sin aditivos a una dosificación de la mezcla en el intervalo de 50 a 300 ppm en peso, determinándose losvalores de CP en cada caso en el combustible destilado medio no sedimentado, sin deterioro simultáneo delcomportamiento de respuesta para la reducción del punto de obstrucción del filtro en frío ("CFPP") con la adición demejoradores del flujo en frío.
Abstract:
Complejos de éter de borano de la fórmula 1, en donde R 1 a R 4 representan independientemente de cada uno hidrógeno, alquilo C1-C4, cicloalquilo C3-C6 o un sustituyente de la fórmula CH2OR 5 , en donde R 5 es alquilo C1- C4 o cicloalquilo C3-C6, o dos sustituyentes adyacentes R 1 a R 4 juntos son un grupo divalente seleccionado del grupo que consiste de -CH2CH2-, -CH(CH3)CH2-, -CH2CH2CH2-, - CH(CH3)CH(CH3)-, -CH(CH2CH3)CH2-, -C(CH3)2C(CH3)2-, -CH2C(CH3)2CH2- y -(CH2)6- para formar con el grupo funcional -CH-CH- del anillo tetrahidrofurano una estructura cíclica, con la condición que por lo menos uno de los sustituyentes R 1 a R 4 no es hidrógeno.
Abstract:
The invention relates to the use of a mixture comprising (A) 5 to 95 wt % of at least one oil-soluble polar nitrogen compound that can interact with paraffin crystals in middle distillate fuels in the cold, and (B) 5 to 95 wt % of at least one oil-soluble aliphatic compound having alkyl or alkenyl chain having at least 8 carbon atoms that can be obtained from aliphatic mono or dicarboxylic acids having 4 to 300 carbon atoms or derivatives thereof having mono or polyamines or having alcohols for reducing the cloud point in middle distillate fuels that have a CP value of -8.0°C or lower before the addition of additives by at least 1.5°C compared to the middle distillate fuel without additives at a dosing of the mixture from 50 to 300 wt ppm, with simultaneous non-deterioration of the response characteristic for reducing the cold filter plugging point upon addition of cold flow improvers.
Abstract:
The present invention relates to a borane ether complex of the formula 1, wherein R1 to R4 represent independently from each other hydrogen, C1-C4-alkyl, C3-C6-cycloalkyl or a substituent of the formula CH2OR5, wherein R5 is C1-C4-alkyl or C3-C6-cycloalkyl, or two adjacent substituents R1 to R4 together are a divalent group selected from the group consisting of -CH2CH2-, -CH(CH3)CH2-, -CH2CH2CH2-, -CH(CH3)CH(CH3)-, -CH(CH2CH3)CH2-, -C(CH3)2C(CH3)2-, -CH2C(CH3)2CH2- and -(CH2)6- to form with the -CH-CH- moiety of the tetrahydrofuran ring a cyclic structure, with the provision that at least one of the substituents R1 to R4 is not hydrogen. The invention also relates to a method of using new borane complexes with substituted tetrahydrofuran ethers for organic reactions.
Abstract:
The present invention relates to a borane ether complex of the formula 1, wherein R1 to R4 represent independently from each other hydrogen, C1-C4-alkyl, C3-C6-cycloalkyl or a substituent of the formula CH2OR5, wherein R5 is C1-C4-alkyl or C3-C6-cycloalkyl, or two adjacent substituents R1 to R4 together are a divalent group selected from the group consisting of -CH2CH2-, -CH(CH3)CH2-, -CH2CH2CH2-, -CH(CH3)CH(CH3)-, -CH(CH2CH3)CH2-, -C(CH3)2C(CH3)2-, -CH2C(CH3)2CH2- and -(CH2)6- to form with the -CH-CH- moiety of the tetrahydrofuran ring a cyclic structure, with the provision that at least one of the substituents R1 to R4 is not hydrogen. The invention also relates to a method of using new borane complexes with substituted tetrahydrofuran ethers for organic reactions.