专利号:US-5262373-A 优先权日:1990-04-20 标题:Process for the synthesis of metal oxides of high specific surface area and high porosity, oxides obtained and catalysts containing the said oxides 发明人:DURAND BERNARD; DE MAREUIL DOMINIQUE; VRINAT MICHEL; THIERRY DES GOURIERES 权利人:ELF AQUITAINE 摘要:PCT No. PCT/FR91/00322 Sec. 371 Date Jan. 17, 1992 Sec. 102(e) Date Jan. 17, 1992 PCT Filed Apr. 18, 1991 PCT Pub. No. WO91/16265 PCT Pub. Date Oct. 31, 1991.A process is provided for the synthesis for metal oxides of high specific surface area and high porosity which are particularly useful as catalyst supports. The process comprises forming a mixture of a salt of at least one metal and a molten salt medium comprising at least one alkali metal salt having an oxidizing effect, maintaining this mixture at the reaction temperature for the time necessary to convert the salt to oxide and thereafter isolating the metal oxide formed.
专利号:US-5329022-A 优先权日:1991-01-16 标 题:Process for the synthesis of citraconimides 发明人:TALMA AUKE G; HOOFT HENDRIKA P M; VAN DE BOVENKAMP-BOUWMAN ANNA 权利人:AKZO AMERICA INC 摘要:The present invention relates to an improved synthesis method for the making of citraconimides wherein a citraconic anhydride is reacted with 0.5 to 2.0 equivalents of at least one amine salt. This process may be carried out in a solvent and generally leads to excellent yields of the citraconimides with high selectivity and easy purification. The present inventional so relates to a process for the production of citraconic anhydride from itaconic anhydride with an amine or phosphine catalyst and in a cosolvent.
专利号:US-6316590-B1 优先权日:1999-11-10 标 题 :Synthesis of stereospecific and atactic poly(lactic acid)s 发明人:COATES GEOFFREY W; CHENG MING; CHAMBERLAIN BRADLEY M 权利人:CORNELL RES FOUNDATION INC 摘要:Isotactic poly ((R)-lactic acid) or isotactic poly (S)-lactic acid are respectively prepared from (R,R)-lactide and (S,S)-lactide using a catalyst which has a zinc center or a magnesium center and two ligands where one of the ligands is a propagating group and the other of the ligands is not a propagating group. Heterotactic poly(lactic acid) is prepared from rac-lactide using a catalyst which has a zinc center and two ligands where one of the ligands is a propagating group and the other of the ligands is not a propagating group; heterotactic poly(lactic acid) is a novel composition. The catalyst with a magnesium center is a novel catalyst. Syndiotactic poly(lactic acid) is prepared from meso-lactide using a syndiotactic poly(lactic acid) effecting catalyst which has a zinc center and two ligands where one of the ligands is a propagating group and the other of the ligands is not a propagating group and the preferred catalyst contains as the ligand which is not a propagating group diiminate substituted with isopropyl substituted phenyl and the propagating group is isopropoxide. Atactic poly(lactic acid) of polydispersity ranging from 1.15 to 1.40 is prepared in less than 10 minutes by polymerizing rac-lactide in the presence of C 1 -C 4 alcohol and a catalyst with a magnesium center and two ligands where one of the ligands is a propagating group and the other of the ligands is not a propagating group.
专利号:EP-0051792-A1 优先权日:1980-11-08 标 题 :Derivatives of hydroxamic-acid esters, process for their preparation and their use as herbicides 发明人:FUEHRER WOLFGANG DR; STETTER JOERG DR; EUE LUDWIG DR; SCHMIDT ROBERT RUDOLF DR 权利人:BAYER AG 摘要:Hydroxamic acid derivatives of the formula in which Y represents oxygen or sulfur, R¹ represents hydrogen, alkyl or alkoxy, R² represents hydrogen, alkyl, alkoxy or halogen, R³ represents hydrogen, alkyl, alkoxy or halogen, R < 4> represents hydrogen or alkyl, R <5> represents alkyl, alkenyl, alkynyl or alkoxyalkyl, R <6> represents hydrogen, alkyl, alkenyl, alkynyl or alkoxyalkyl or R <4> and R <5> together represent one Alkylene chain, or R 5 and R 6 together represent an alkylene chain, provided Y is oxygen and Z is halogen, a process for their preparation and their use as herbicides. N-phenylglycine derivatives of the formula in which Y, R¹, R², R³, R <4>, R <5> and R <6> have the meanings given above, several processes for their preparation and their use as intermediates for the synthesis of the substances of formula (I).
专利号:US-2010093880-A1 优先权日:2006-12-20 标 题:Recycling cleavage of polyurethanes 发明人:BERGFELD MANFRED; KIEFFER ANDREAS 权利人:BERGFELD MANFRED; KIEFFER ANDREAS 摘要:A process is described for splitting polyurethanes and polyurethaneureas, in which the polymer is first reacted with gaseous or liquid secondary aliphatic or cycloaliphatic amines, the secondary urea formed, after removal with hydrogen chloride, is split to the isocyanate, and the polyols or polyamines also formed in the reaction are worked up and purified. It is possible by the process according to the invention to work up polyurethanes, polyurethaneureas, etc., of any origin, and to break them down into the starting materials, specifically the isocyanates, polyols or polyamines, to form starting materials in very high quality, which can be reused for the synthesis of any polyurethanes or polyureas. The invention further provides for the preparation of secondary bis-ureas from polyurethanes or polyurethaneureas or/and ureas.
专利号:WO-2023248205-A1 优先权日:2022-06-23 标 题 :Novel ruthenium complexes, method of their synthesis, intermediate compounds used in this method, method of their synthesis and the use of novel ruthenium complexes in olefin metathesis reactions 发明人:GRELA KAROL; KAJETANOWICZ ANNA; SYTNICZUK ADRIAN; MILEWSKI MARIUSZ; PUROHIT VISHAL; STRUZIK FILIP 权利人:UNIV WARSZAWSKI 摘要:The subject of the invention is a novel ruthenium complex with the general formula Ru-1, in which all the variables have the meaning defined in the disclosure. The subject of the invention is also a synthesis method of the ruthenium complex, an intermediate which is a precursor of the ligand used in the synthesis reactions of the ruthenium complex CAAC-1 and application of this ruthenium complex as a (pre)catalyst in olefin metathesis reactions.
[参考文献]: A D Kligerman, Et Al. An Evaluation Of The Feasibility Of Using Cytogenetic Damage As A Biomarker For Alachlor Exposure. Mutat Res. 1999 Apr 26;441(1):95-101. [参考文献]: Chi-Zen Chen, Et Al. Determination Of Alachlor And Its Metabolite 2,6-Diethylaniline In Microbial Culture Medium Using Online Microdialysis Enriched-Sampling Coupled To High-Performance Liquid Chromatography. J Agric Food Chem. 2011 Aug 10;59(15):8078-85. [参考文献]: L Dures Sette, Et Al. Biodegradation Of Alachlor By Soil Streptomycetes. Appl Microbiol Biotechnol. 2004 Jun;64(5):712-7. [参考文献]: Libby R Heeb, Et Al. Further Evidence Of An Inverted Region In Proton Transfer Within The Benzophenone/substituted Aniline Contact Radical Ion Pairs; Importance Of Vibrational Reorganization Energy. J Phys Chem A. 2006 May 25;110(20):6408-14. [参考文献]: M Taningher, Et Al. Lack Of Alachlor Induced Dna Damage As Assayed In Rodent Liver By The Alkaline Elution Test. Toxicology. 1993 Dec 31;85(2-3):117-22.
合成参考文献
摘要:Chand, K.; Umesh; Dorairaj, D. P.; Hsu, S. C. N., Science of Synthesis Knowledge Updates, (2021) 2, 268. 摘要:Chand, K.; Umesh; Dorairaj, D. P.; Hsu, S. C. N., Science of Synthesis Knowledge Updates, (2021) 2, 260. 摘要:Isovitsch, R., Science of Synthesis Knowledge Updates, (2021) 2, 250. 摘要:Fundamental and Applied Toxicology., 3(285), 1983 摘要:Bollag JM et al; Soil Science 143: 56-65 (1987)