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2,3,5-Tri-O-Acetyl-D-Ribofuranosyl Bromide置于bis(Cyclopentadienyl)-Titanium(Iii) Chloride体系中,用95%的收率获得产物乙酸糠酯
参考文献:Rapid Preparation Of Variously Protected Glycals Using Titanium(Iii)
标题:Rapid Preparation Of Variously Protected Glycals Using Titanium(Iii)
摘要:Glycosyl Chlorides And Bromides Can Be Rapidly Converted To Glycals In High Yield By Reaction With (Cp2Ti[iii]Cl)(2). This Reagent Tolerates A Wide Range Of Common Carbohydrate Protecting Groups,Including Silyl Ethers,Acetals,And Esters; The Methodology Provides A General Route For The Preparation Of Glycals Substituted With Both Acid-And Base-Labile Functionality. A Reaction Mechanism Is Proposed That Is Based On Heteroatom Abstraction To Give An Intermediate Glycosyl Radical. This Radical Reacts With A Second Equivalent Of Ti(Iii) To Yield A Glycosyltitanium(Iv) Species. P-Heteroatom Elimination From The Glycosyltitanium(Iv) Complex Gives The Glycal.
DOI:10.1021/jo982447K

专利信息

专利号:WO-2017178716-A1
优先权日:2016-04-14
标题 :Method for the synthesis of a mineral oxide using an organic acid insoluble in water
发明人：PARMENTIER FRANÇOIS
权利人:PARMENTIER FRANÇOIS
摘要:The invention relates to a method for the synthesis of precipitated silica from an aqueous solution comprising a silicate ion and an alkaline cation, said method being characterized in that the silicate ion is precipitated by a low-volatility organic acid having more than four carbon atoms.

专利号:US-9403841-B2
优先权日:2012-01-25
标题:Phragamalin limonoids for the treatment of sexual dysfunction
发明人：WIKBERG JARL; JIRGENSONS AIGARS; LIEPINSH EDVARDS
权利人:DICOTYLEDON AB
摘要:The present invention relates to novel chemical compounds, to methods for synthesis of such compounds, and to the use of these novel compounds in the synthesis of other chemical compounds that, inter alia, may be used in the treatment of sexual dysfunction, and for eliciting enhancing effects on sexual behavior. The invention also relates to remarkable biological properties of the novel compounds in their capacity of inducing aggressive behavior.

专利号:US-2005209355-A1
优先权日:2004-03-22
标 题:[Novel Reactions and the Products of Such Reactions]
发明人：ROITMAN LIPA L
权利人:ROITMAN LIPA L
摘要:A process for the synthesis of novel compounds is described comprising reacting tetrachloroethylene with substances containing active methylene group in the presence of free radical initiators. Also, a process for grafting tetrachloroethylene is described comprising reacting these compounds with polymers containing active methylene group in the presence of free radical initiators. Furthermore, a method of conducting such reactions to high conversion is described, comprising conducting the reactions in the reflux condensate. The present invention provides a novel and high yield route for heretofore unobtainable materials.

专利号:US-7015344-B2
优先权日:2004-06-29
标题 :Synthesis of organometallic cyclometallated group viiib metal complexes
发明人：DEATON JOSEPH C
权利人:EASTMAN KODAK CO
摘要:A process for forming an organometallic cyclometallated Group viiib metal complex comprises reacting a Group viiib metal compound with a heterocyclic compound capable of forming an organometallic cyclometallated complex in the presence of a solvent comprising an aromatic oxygen containing compound.

专利号:US-3644446-A
优先权日:1969-07-01
标 题 :Preparation of rhodium and iridium hydride carbonyl complexes
发明人：BOOTH FRANK B; FENTON DONALD M; OLIVIER KENNETH L
权利人:UNION OIL CO
摘要:HYDRIDE CARBONYL COMPLEXES OF RHODIUM AND IRIDIUM WITH BIPHYLIC LIGANDS ARE PREPARED BY TREATMENT OF RHODIUM OR IRIDIUM, COMPLEXES OR SALTS THEREOF WITH AN ALKALI METAL HYDROXIDE, ALKOXIDE OR ARYLOXIDE AND A BIPHYLLIC LIGAND AND A MIDL REDUCING AGENT. IN A TYPICAL SYNTHESIS A RHODIUM CARBONYL SALT IS CONTACTED WITH AN ALKALI METAL ALKOXIDE IN THE PRESENCE OF THE LIGAND AND THE HYDRIDE IS FORMED BY SUBSEQUENT OR SIMULTANEOUS CONTACTING WITH A REDUCING AGENT SUCH AS HYDROGEN, CARBON MONOXIDE OR AN OXIDIZABLE ALCOHOL. THE COMPOUNDS HAVE UTILITY AS HYDROFORMYLATION CATALYSTS.

专利号:BR-112017006799-B1
优先权日:2014-10-17
标题 :METHOD OF TREATMENT OF AN UNDERGROUND FORMATION, PROCESS FOR THE SYNTHESIS OF A COMPOUND, AND, SYSTEM FOR CARRYING OUT THE METHOD