Abstract: A process for preparing compounds of the formula (II), where the substituents R1 to R5 are each independently H, CH3, straight-chain or branched C1-C8-alkyl, CH(OC1-C5-alkyl)2, CH(C1-C5-alkyl)(OC1-C5-alkyl), CH2(OC1-C5-alkyl), CH(CH3)(OC1-C5-alkyl), C1-C8-alkoxy, N(C1-C5-alkyl)2, phenyl, substituted phenyl, aryl, heteroaryl, S(C1-C5-alkyl) or a radical Caryl, alkyl, and the symbols X1 to 5 are each carbon.

Abstract: Compounds of the formula (I) 1

Abstract: Described are bis(perfluoro-n-alkane-sulfonate) compounds, methods for preparing these compounds and use of these compounds, for example as starting materials for the synthesis of chiral and phosphine ligands for transition metal catalysts.

Abstract: Compounds of the formula (I) in which Q1 and Q2 are each OH or form a trimeric boric anhydride, Z is CHO, CH2Y, X or a protected aldehyde group, and X is CN, COOH, COCl, CONH2 or C(OR)3, and Y is OH or NH2, and Z is in the o-, m- or p-position to the boronic acid radical, are prepared by a) reacting a compound of the formula (II)  with Mg in the presence of an anthracene compound and, if desired, a transition-metal halide and, if desired, an Mg halide or in the presence of a transition-metal halide and, if desired, an Mg halide, to give the corresponding arylmagnesium chloride, b) reacting the latter with a borate of the formula B(OR′)3 and hydrolyzing the product, with removal of the aldehyde protecting group, c) and, if desired, oxidizing or reducing the free aldehyde group.

Abstract: Process for preparing arylboron and alkylboron compounds of the formulae (II) and (III) by reacting arylmagnesium and alkylmagnesium halides of the formula (I) with boron compounds in microreactors in accordance with equation I or equation II, 1

Abstract: A process for preparing 4-substituted 2-alkylbiphenyls and 2-alkoxybiphenyls of the formula (I),

Abstract: Process for preparing arylboron and alkylboron compounds of the formulae (II) and (III) by reacting lithioaromatics and lithiated aliphatics of the formula (I) with boron compounds in microreactors in accordance with equation I or equation II, 1

Abstract: A process for purifying formylphenylboronic acids of the formula (I) 1

Abstract: A process for preparing compounds of the formula (II), 1

Abstract: A process for preparing boronic acids of the formula (I) and borinic acids of the formula (II), 1

Abstract: A process for preparing 4-substituted 2-alkylbiphenyls and 2-alkoxybiphenyls of the formula (I), 1

Abstract: A process for purifying formylphenylboronic acids of the formula (I) where the formyl function is located in the ortho, meta or para position relative to the boronic acid function, by dissolving the crude formylphenylboronic acids in an alkaline solvent having a pH in the range from 8 to 11 separating off the insoluble organic impurities and subsequently acidifying the alkaline boronic acid solution and separating off and working up the precipitated boronic acid. The crude formylphenylboronic acid is preferably dissolved in aqueous alkali metal or alkaline earth metal oxide, hydroxide, carbonate or phosphate solutions at temperatures in the range from 5 to 50° C. The formylphenylboronic acids obtained have a purity of ≧99% and are suitable as precursors for liquid-crystalline compounds, as liquid crystals or as constituents of liquid-crystalline mixtures or as pharmaceutical intermediates.

Abstract: The invention relates to use of monolithic sorbents for preparative separation processes, specially for processes according to the simulated moving bed (SMB) principle.

Abstract: Biaryls, e,g,. biphenyls, phenylpyridines, phenylfurans, phenylpyrroles, phenylthiophenes, bipyridines, pyridylfurans or pyridylpyrroles are prepared in high yields by coupling aromatics with an aromatic boric acid or boric ester in the presence of a palladaphosphacyclobutane catalyst.

Abstract: The invention relates to a process for preparing 4-(4′-carboxyphenyl)pyridine, which comprises oxidizing a 4-phenyl-N-acyldihydropyridine of the formula (II) where R1 is a bulky alkyl, alkylaryl, arylalkyl or alkoxy group and R2 is a straight-chain or branched, substituted or unsubstituted alkyl radical having from 1 to 8 carbon atoms, by means of an oxidizing agent selected from the group consisting of permanganates, nitric acid, Cr(VI) compounds, oxygen and air to give the compound of the formula (I) where M is a cation.

Abstract: Aromatic amines of the formula (I) Ar—[NR6R7]n  (I) are prepared by reacting a haloaromatic of the formula (II) Ar—Hal  (II) with an amine of the formula (III) R6R7NH  (III) in the presence of a palladaphosphacyclobutane and a base and in the presence or absence of an ionic halide in a solvent at temperatures of from 20 to 200° C.

Abstract: Described are bis(perfluoro-n-alkane-sulfonate) compounds, methods for preparing these compounds and use of these compounds, for example as starting materials for the synthesis of chiral and phosphine ligands for transition metal catalysts.

Abstract: A process for purifying formylphenylboronic acids of the formula (I) 1

Abstract: The invention relates to a process for preparing a compound of the formula (I) 1

Abstract: The invention relates to a process for preparing 4-(4′-carboxyphenyl)pyridine, which comprises oxidizing a 4-phenyl-N-acyldihydropyridine of the formula (II) 1