5 results about "Decane" patented technology

The present invention relates to a process for the synthesis of the anti-haemorrhagic agent (R)-N-hydroxy-2-((4-(4-(methylcarbamoyl)phenoxy)phenyl)-sulfonyl)-8- azaspiro[4.5]decane-2-carboxamide and intermediates thereof. The invention also relates to a process for the preparation of a synthetic intermediate of said anti- haemorrhagic agent, (R)-8-(tert-butoxycarbonyl)-2-((4-fluorophenyl)sulfonyl)-8- azaspiro[4.5]decane-2-carboxylic acid and intermediates thereof.

The present invention describes the gold-catalyzed construction of geminocyano-substituted tricyclic [4.4.0.0] 1,5 The method for synthesizing the decane skeleton belongs to the field of organic synthesis technology. Compound 1 is added to an organic solvent, and the reaction is carried out at 25℃-80℃ for 3 hours in the presence of a gold catalyst and additives to obtain product compound 2. The gold catalyst is selected from triphenylphosphine monochloride, triphenylphosphine gold(I) 3-methylbenzotriazole salt, and triphenylphosphine gold(I) trifluoromethanesulfonate. The additive is selected from silver trifluoromethanesulfonate, silver fluoroantimonate, and silver bis(trifluoromethanesulfonylimide). The synthetic method described in this invention is simple to operate, low in cost, highly efficient, and widely applicable, possessing practical application value. Substrate 1 in this invention can be flexibly derivatized by adjusting the structure of its synthetic raw materials or through subsequent functionalization modifications, providing greater convenience for skeleton modification. This invention utilizes the properties of gold catalysts to achieve rapid and convenient synthesis of fused-ring skeletons containing three-membered rings that are difficult to synthesize under other conditions.

This invention relates to a catalyst for the selective reduction of NOx, said catalyst being based on IZM-10 AEI zeolite and at least one transition metal, and a method for its preparation, said method comprising at least mixing the following substances in an aqueous medium: FAU-type zeolite, whose SiO2... 2(FAU) / Al2O 3(FAU) The process involves: ii) a molar ratio of 10 to 60 (inclusive) and less than 0.005% by mass of sodium in cationic form, a nitrogen-containing organic compound R (wherein R is (6R,10S)-6,10-dimethyl-5-aza-onium spiro[4,5]decane in hydroxide form), and optionally sodium hydroxide, until a homogeneous precursor gel is obtained; iii) a hydrothermal treatment step; iii) a step of at least one ion exchange with a solution containing at least one substance capable of releasing a transition metal; and iv) a heat treatment step by drying and calcination.

A small crystal borosilicate zeolite having the framework structure of SSZ-43 is provided. The zeolite may be synthesized by (a) preparing a synthesis mixture comprising a boron atom source, a silicon atom source, a structure directing agent comprising a (6R, 10S)- 6,10-dimethyl-5-azaspiro[4.5]decane cation, a source of hydroxide ions, a source of an alkaline and / or alkaline-earth metal, beta zeolite seeds, and water; (b) heating the synthesis mixture under crystallization conditions including a temperature of from 100°C to 200°C for a time sufficient to form crystals of the borosilicate zeolite; and (c) recovering at least a portion of the borosilicate zeolite from step (b).

This invention relates to a method for preparing AEI-based IZM-10 zeolite, the method comprising at least mixing the following substances in an aqueous medium: FAU-based zeolite, whose SiO2... 2(FAU) / Al2O 3(FAU) The precursor gel obtained at the end of step i) is then subjected to hydrothermal treatment, comprising a molar ratio of 10 to 60 (inclusive of endpoints) and less than 0.005% by mass of sodium in cationic form, a nitrogen-containing organic compound R, wherein R is (6R,10S)-6,10-dimethyl-5-aza-onium spiro[4.5]decane in hydroxide form, and optionally sodium hydroxide. The invention also relates to AEI-based zeolites having a SiO2 / Al2O3 molar ratio of 10 to 60 (inclusive of endpoints) and a purity greater than or equal to 98% by weight, preferably greater than or equal to 99% by weight, wherein the zeolite is in a partially or fully protonated form and is obtained by the method described.