Goods & Services

Chemicals for use in industry for non-medical purpose, namely, specialty chemical preparations containing alkali metals and boron for use in the manufacture of industrial chemicals and pharmaceuticals

Abstract

The invention relates to new processes to prepare low odor dialkyl sulfides, the low odor dialkyl sulfides obtainable by these processes and to methods of using these low odor dialkyl sulfides. Moreover, the invention relates to a process to prepare dialkyl sulfide borane complexes of high purity, the dialkyl sulfide borane complexes obtainable by this process and to a process for enantioselective reductions employing these dialkyl sulfide borane complexes of high purity as reducing agent.

IPC Classes  ?

• C07C 319/00 - Preparation of thiols, sulfides, hydropolysulfides or polysulfides
• C07F 9/02 - Phosphorus compounds
• C07C 319/28 - SeparationPurification
• C07F 5/02 - Boron compounds

Abstract

The present invention provides a process for preparing triorgano borates with low alcohol content.

IPC Classes  ?

• C07F 5/04 - Esters of boric acids

Abstract

The present invention relates to new borane complexes with substituted pyridines, a process for the synthesis of new borane complexes with substituted pyridines, solutions comprising new borane complexes with substituted pyridines and a method of using new borane complexes with substituted pyridines for organic reactions.

IPC Classes  ?

• C07F 5/02 - Boron compounds
• C09K 15/32 - Anti-oxidant compositionsCompositions inhibiting chemical change containing organic compounds containing boron, silicon, phosphorus, selenium, tellurium or a metal

Abstract

The invention relates to new processes to prepare low odor dialkyl sulfides, the low odor dialkyl sulfides obtainable by these processes and to methods of using these low odor dialkyl sulfides. Moreover, the invention relates to a process to prepare dialkyl sulfide borane complexes of high purity, the dialkyl sulfide borane complexes obtainable by this process and to a process for enantioselective reductions employing these dialkyl sulfide borane complexes of high purity as reducing agent.

IPC Classes  ?

• C07F 5/02 - Boron compounds
• C07C 319/00 - Preparation of thiols, sulfides, hydropolysulfides or polysulfides

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.

IPC Classes  ?

• C07C 209/30 - Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds
• C07C 209/24 - Preparation of compounds containing amino groups bound to a carbon skeleton by reductive alkylation of ammonia, amines or compounds having groups reducible to amino groups, with carbonyl compounds
• C07C 29/136 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen-containing functional group of C=O containing groups, e.g. —COOH

Abstract

The invention relates to a process for the synthesis of dialkoxyorganoboranes, in particular to a process for the synthesis of dialkoxyorganoboranes by an ester exchange reaction. Moreover, the invention relates to a process for the synthesis of organo-oxazaborolidine catalysts (organo-CBS) and of trialkylboroxins. Furthermore, the invention relates to methods of using dialkoxyorganoboranes for the preparation of organo-CBS catalysts and in Suzuki-type coupling reactions.

IPC Classes  ?

• C07F 5/02 - Boron compounds

Goods & Services

Specialty chemical products, namely, reagents containing alkali metals and boron for use in the manufacture of industrial chemicals and pharmaceuticals