Abstract:
Filtration system comprising at least one membrane, wherein at least one component or at least one part of a component of the filtration system has been obtained by a process comprising the following steps: A) treatment of a said component or part of a component with at least one organoborane-amine complex, B) treatment of a said component or part of a component with a composition comprising at least one radically polymerizable compound, C) optional treatment with a deblocking agent.
Abstract:
The invention relates to a method for producing aldehydes by reacting an α,β-unsaturated carboxylic acid or the salt thereof with carbon monoxide and hydrogen in the presence of a catalyst, said catalyst comprising at least one complex of a metal of subgroup VIII of the periodic system of the elements with a compound of formula (I), wherein Pn represents pnicogen; W represents a bivalent bridging group with 1 to 8 bridging atoms between the flanking bonds; R 1 represents a functional group capable of forming at least one intermolecular, non-covalent bond with the group -X(=O)OH of the compound of formula (I); R 2 , R 3 represent optionally substituted alkyl, cycloalkyl, heterocycloalkyl, aryl or hetaryl each, or together with the pnicogen atom, and, if applicable, together with the groups Y 2 and Y 3 represent a non-anellated or anellated and unsubstituted or substituted 5- to 8-membered heterocycle; a, b and c is 0 or 1; and Y 1 , Y 2 , Y 3 independently represent O, S, NR a , or SiR b R c , wherein R a , R b , R c represent H or unsubstituted or substituted alkyl, cycloalkyl, heterocycloalkyl, aryl or hetaryl each. The invention also relates to the use of said catalyst for the decarboxylating hydroformylation of α,β-unsaturated carboxylic acids.
Abstract translation:本发明涉及一种通过使α,β-不饱和羧酸或其盐与一氧化碳和氢气在催化剂存在下反应来制备醛的方法,所述催化剂包含至少一种式 具有式(I)的至少一种化合物的元素周期表,其中Pn是pnicogen; W是在侧翼键之间具有1至8个桥原子的二价桥连基团; R1是能够与式(I)化合物的-X(= O)OH基团形成至少一个分子间,非共价键的官能团; R 2,R 3各自为任选取代的烷基,环烷基,杂环烷基,芳基或杂芳基,或与pnicogen原子一起并与Y2和Y3基团一起形成任选稠合的和任选取代的5-至8-元杂环; a,b和c各自为0或1; 其中R a,b,c各自为H或在任何情况下均为任选取代的烷基,环烷基,杂环烷基,芳基或杂芳基; R 1,R 2, 以及使用上述催化剂进行α,β-不饱和羧酸的脱羧加氢甲酰化反应。
Abstract:
The present invention relates to a method for the production of n-substituted (3-dihalomethyl-1-methyl-pyrazole-4-YL) carboxamides of the formula (I), wherein R1 stands for optionally substituted phenyl or C3-C7-cycloalkyl, R1a stands for hydrogen or fluorine, or R1a together with R1 stands for optionally substituted C3-C5-alkyandiyl or C5-C7-cycloalkandiyl, R2 stands for C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkinyl or C1-C4-alkoxy-C1-C2-alkyl, X stands for F or Cl, and n stands for 0, 1, 2, or 3, said method comprising A) providing a compound of the formula (II), wherein X stands for F or Cl, Y for Cl or Br, and R2 has one of the above-mentioned meanings, and B) the reaction of a compound of the formula (II) with carbon monoxide and a compound of the formula (III), wherein R1, R1a and n have one of the above-mentioned meanings; in the presence of a palladium catalyst; the intermediate products used for the production according to the inventive method; and methods for the production thereof.
Abstract:
The invention relates to a particularly economic, complete method for producing menthol, especially for the production of optically active, essentially enantiomerically and diastereomerically pure L-menthol and of racemic menthol starting from the commercially accessible, inexpensive parent material citral. The method comprises the following steps: a.1 ) catalytic hydrogenation of neral and/or geranial to form citronellal, b.1 ) cyclisation of citronellal to form isopulegol in the presence of an acidic catalyst, c.1 ) purification of isopulegol by crystallisation and d.1 ) catalytic hydrogenation of isopulegol to form menthol.
Abstract:
The invention relates to a method for the hydroformylation of compounds of formula (I), or the salts thereof. In formula (I), X is C, P(RX), P(O-RX) S or S(=O), wherein Rx is H, alkyl, cycloalkyl, heterocycloalkyl, aryl or hetaryl; A is a divalent bridging group comprising between 1 and 4 bridge atoms; and R1 is H, alkyl, alkenyl, alkinyl, cycloalkyl, heterocycloalkyl, aryl or hetaryl. According to said method, the compound of formula (I) is reacted with carbon monoxide and hydrogen in the presence of a catalyst, the catalyst comprising a complex of a metal of the eighth subgroup with a compound of formula (II), wherein Pn is a pnicogen atom; W is a divalent bridging group comprising between 1 and 8 bridge atoms; R2 is a functional group that can form an intermolecular, non-covalent bond with the group -X(=O)OH; R3, R4 is alkyl, cycloalkyl, heterocycloalkyl, aryl or hetaryl; a, b, c are 0 or 1; and Y1, Y2 and Y3 are O, S, NRa or SiRbRc. The method according to the invention is also for hydroformylation of compounds of formula (II.a), wherein W' is a bivalent bridging group comprising between 1 and 5 bridge atoms between the adjacent bonds, Z is O, S, S(=O), S(=O)2, N(RIX) or C(RIX)(RX); and R1 to Rx are independently H, halogen, nitro, cyano, amino, alkyl, etc.; or two radicals RI, RII, RIV, RVI, RVIII and RIX, for the bond part of a covalent bond.