📜二甲基一氯硅烷,氯丙烯镁置于3-氯丙烯体系中,用 四氢呋喃 作为反应溶剂,化学反应 3.0H,以89.7%的收率获得产物二甲基烯丙基硅烷 参考文献:Zhun',V.I.; Tsvetkov,A. L.; Sheludyakov,V. D.,Journal Of General Chemistry Of The Ussr,1988,Vol. 58,# 7,P. 1425-1431 标题:Zhun',V.I.; Tsvetkov,A. L.; Sheludyakov,V. D.,Journal Of General Chemistry Of The Ussr,1988,Vol. 58,# 7,P. 1425-1431
专利号:US-6639059-B1 优先权日:1999-03-24 标 题 :Synthesis of [2.2.1]bicyclo nucleosides 发明人:KOCHKINE ALEXEI; FENSHOLDT JEF; PFUNDHELLER HENRIK M 权利人:EXIQON AS 摘要:A synthesis of [2.2.1]bicyclo nucleosides which is shorter and provides higher overall yields proceeds via the key intermediate of the general formula III, wherein R4 and R5 are, for instance, sulfonates and R7 is, for instance, a halogen or an acetate. From compounds of the general formula II, such as 3-O-aryl-4-C-hydroxymethyl-1,2-O-isopropylidene-alpha-D-ribofuranose, intermediates of the general formula III are suitable for coupling with silylated nucleobases. Upon one-pot base-induced ring-closure and desulfonation of the formed [2.2.1]bicyclo nucleoside, a short route to each the LNA (Locked Nucleic Acid) derivatives of adenosine, cytosine, uridine, thymidine and guanidine is demonstrated. The use of the 5'-sulfonated ring-closed intermediate also allows for synthesis of 5'-amino- and thio-LNAs.
专利号:US-6734291-B2 优先权日:1999-03-24 标题:Synthesis of [2.2.1]bicyclo nucleosides 发明人:KOCHKINE ALEXEI; FENSHOLDT JEF; PFUNDHELLER HENRIK M 权利人:EXIQON AS 摘要:A synthesis of [2.2.1]bicyclo nucleosides which is shorter and provides higher overall yields proceeds via the key intermediate of the general formula III, wherein R4 and R5 are, for instance, sulfonates and R7 is, for instance, a halogen or an acetate. From compounds of the general formula II, such as 3-O-aryl-4-C-hydroxymethyl-1,2-O-isopropylidene-alpha-D-ribofuranose, intermediates of the general formula III are suitable for coupling with silylated nucleobases. Upon one-pot base-induced ring-closure and desulfonation of the formed [2.2.1]bicyclo nucleoside, a short route to each the LNA (Locked Nucleic Acid) derivatives of adenosine, cytosine, uridine, thymidine and guanidine is demonstrated. The use of the 5'-sulfonated ring-closed intermediate also allows for synthesis of 5'-amino- and thio-LNAs
专利号:US-7468452-B1 优先权日:2007-12-12 标题 :Process for one-pot synthesis of 1,1-diphenyl-1-(3-substituted-cyclopentadienyl)-1-(2,7-di-t-butyl-fluoren-9-yl)methane type ligands 发明人:MARTIN JOEL L; MASINO ALBERT P; YANG QING 权利人:CHEVRON PHILLIPS CHEMICAL CO 摘要:The present invention is directed to a method of making a ligand which can be used to form an ansa-metallocene. Further, the present invention is directed to a method of making the ansa-metallocene. In both methods the process steps employed to form the ligand are conducted in the presence of tetrahydrofuran, a substituted tetrahydrofuran, tetrahydropyran, a substituted tetrahydropyran or ethylene glycol dimethyl ether.
专利号:US-10207974-B1 优先权日:2017-12-05 标 题 :Synthesis of gamma dicarbonyl and pyrrole compounds 发明人:LASSEN KENNETH M 权利人:CHEVRON PHILLIPS CHEMICAL CO LP 摘要:The present invention discloses processes for producing γ-dicarbonyl compounds by contacting an aldehyde compound, an α,β-unsaturated carbonyl compound, and a catalyst composition in the presence of an amide diluent. The resultant γ-dicarbonyl compounds then can be used to synthesize pyrrole compounds, such as 2,5-dimethylpyrrole.
专利号:US-9663594-B2 优先权日:2014-05-15 标 题 :Synthesis of aryl coupled bis phenoxides and their use in olefin polymerization catalyst systems with activator-supports 发明人:HLAVINKA MARK L 权利人:CHEVRON PHILLIPS CHEMICAL CO LP; CHEVRON PHILIPS CHEMICAL COMPANY LP 摘要:Disclosed herein are methods of making bis(phenol) ligand compounds and transition metal bis(phenolate) compounds. The transition metal bis(phenolate) compounds can be used as components in catalyst systems for the polymerization of olefins.
专利号:WO-0166611-A1 优先权日:2000-03-07 标题 :Method for carrying out the rare earth metal-catalyzed synthesis of polyacrylates having a high isotacticity 发明人:ANWANDER REINER; GOERLITZER HANS W; HERRMANN WOLFGANG A; DORN KLAUS; OSTHAUS ELKE; SCHWIND HELMUT 权利人:ROEHM GMBH; ANWANDER REINER; GOERLITZER HANS W; HERRMANN WOLFGANG A; DORN KLAUS; OSTHAUS ELKE; SCHWIND HELMUT 摘要:The invention relates to a method for producing polymerizates and copolymerizates of alpha -substituted acrylic compounds according to which one or more polymerizable monomeric compounds of general formula (I), wherein R<1> and R<2> assume the meanings as cited in the description, is/are polymerized, in the presence of a catalytically active structure, obtained in situ from an organometallic rare earth metal (III) complex or from a rare earth metal (II) complex of general formula (II): [(IND)A(IND)]LnR<6>, wherein: IND signifies a substituted indenyl group or a substituted cyclopentadienyl group with a fused aromatic or aliphatic ring; A represents a diyl radical which bridges two IND units and which comprises an element from groups 13, 14, 15 or 16 of the periodic table; Ln represents a rare earth metal in oxidation step +3 or +2, and; R<6> represents a hydride ligand or a ligand that is capable of forming agostic interactions, or represents a neutral donor ligand (e.g. tetrahydrofuran). The one or more polymerizable monomeric compounds is/are polymerized in an aprotic solvent for the catalytically active compound at temperatures ranging from -100 DEG C to the boiling point of the solvent. The polymerizate or copolymerizate obtained from the polymerization is, in an appropriate manner, isolated or subjected to an additional processing in solution. The invention also relates to the obtained polymerizates and copolymerizates which have a high isotacticity.
摘要:Anderson, E. A.; Lim, D. S. W., Science of Synthesis Knowledge Updates, (2015) 1, 84. 摘要:Tian, T.; Li, Z., Science of Synthesis Knowledge Updates, (2020) 2, 423.