专利号:US-3887490-A 优先权日:1970-08-27 标 题 :Process for regenerating noble metal catalyst for the synthesis of hydrogen peroxide according to the anthraquinone process 发明人:SCHREYER GERD; THEISSEN FERDINAND; WEIBERG OTTO; WEIGERT WOLFGANG 权利人:DEGUSSA 摘要:In situ regeneration of noble metal catalysts for the synthesis of hydrogen peroxide by the anthraquinone process is provided by employing as the working solution coming from the extraction or desorption step and being introduced into the hydrogenation step a solution which contains at least 250 mg/liter of hydrogen peroxide, to thereby completely regenerate the noble metal catalyst by full capacity of the hydrogenation step.
专利号:US-9045381-B2 优先权日:2010-10-19 标 题:Ruthenium complexes and their uses in processes for formation and/or hydrogenation of esters, amides and derivatives thereof 发明人:MILSTEIN DAVID; BALARAMAN EKAMBARAM; GUNANATHAN CHIDAMBARAM; GNANAPRAKASAM BOOPATHY; ZHANG JING 权利人:MILSTEIN DAVID; BALARAMAN EKAMBARAM; GUNANATHAN CHIDAMBARAM; GNANAPRAKASAM BOOPATHY; ZHANG JING; YEDA RES & DEV 摘要:The present invention relates to novel Ruthenium catalysts and related borohydride complexes, and the use of such catalysts, inter alia, for (1) hydrogenation of amides (including polyamides) to alcohols and amines; (2) preparing amides from alcohols with amines (including the preparation of polyamides (e.g., polypeptides) by reacting dialcohols and diamines and/or by polymerization of amino alcohols); (3) hydrogenation of esters to alcohols (including hydrogenation of cyclic esters (lactones) or cyclic di-esters (di-lactones) or polyesters); (4) hydrogenation of organic carbonates (including polycarbonates) to alcohols and hydrogenation of carbamates (including polycarbamates) or urea derivatives to alcohols and amines; (5) dehydrogenative coupling of alcohols to esters; (6) hydrogenation of secondary alcohols to ketones; (7) amidation of esters (i.e., synthesis of amides from esters and amines); (8) acylation of alcohols using esters; (9) coupling of alcohols with water to form carboxylic acids; and (10) dehydrogenation of beta-amino alcohols to form pyrazines. The present invention further relates to the novel uses of certain pyridine Ruthenium catalysts.
专利号:WO-2023177866-A1 优先权日:2022-03-18 标题 :Decarboxylative acetoxylation using mn(ii) or mn(iii) reagent for synthesis of 4'-acetoxy- nucleoside and use thereof for synthesis of corresponding 4'-(dimethoxyphosphoryl)methoxy- nucleotide
专利号:US-5237116-A 优先权日:1989-10-31 标题 :Catalyst and process for coupling organometallic reagents with aryl or vinylic halides 发明人:CORLEY LARRY S 权利人:SHELL OIL CO 摘要:A process and catalyst are disclosed for the catalyzed reaction of an organometallic reagent with a reactive halide in the presence of a diphosphine complex of a nickel carboxylate or sulfonate. The process can be employed in the synthesis of aromatic compounds such as bisbenzocyclobutenes.
专利号:CN-1242007-A 优先权日:1996-12-23 标题:Cycloalkyl, lactam, lactone and related compounds, pharmaceutical compositions comprising such compounds, and methods of inhibiting beta amyloid peptide release and/or its synthesis using such compounds
专利号:CN-118388524-A 优先权日:2024-04-22 标 题:Synthesis method of tin oxygen cluster compound
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