CAS: 1774-35-2; P-Tolyl Sulfoxide

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CAS号911820-09-2 tert-butyl 3-(4... | CAS号624-31-7 对碘甲苯 | CAS号620-94-0 4,4’-二甲基二苯硫醚 | CAS号106-38-7 对溴甲苯 | CAS号934-72-5 甲基对甲苯亚砜 | CAS号106-43-4 对氯甲苯 | CAS号108-88-3 甲苯 | CAS号136378-30-8 2-naphthyl p-to... | CAS号77096-69-6 2-methyldibenzo... | CAS号620-94-0 4,4’-二甲基二苯硫醚 | CAS号459-57-4 对氟苯甲醛 | CAS号945-51-7 二苯基亚砜 | CAS号77096-69-6 2-methyldibenzo... | CAS号6840-28-4 二苯基(对甲苯基)氧化膦 | CAS号22743-99-3 Sulfonium, tri-... | CAS号22417-22-7 Sulfonium,tris(... | CAS号95-57-8 邻氯苯酚 | CAS号106-48-9 对氯苯酚

📜对甲苯基溴化镁置于1,1'-Binaphthyl-2,2'-Diyl Sulfite体系中,化学反应生成4,4'-二甲苯亚砜
参考文献:外消旋和旋光 1,1'-Binaphthyl-2,2'-Diyl亚硫酸盐:合成,晶体结构和与选定亲核试剂的开环反应
标题:外消旋和旋光 1,1'-Binaphthyl-2,2'-Diyl亚硫酸盐:合成,晶体结构和与选定亲核试剂的开环反应
摘要:报道了衍生自 Binol 的外消旋和 (R)-(+)-对映异构体的亚硫酸盐的制备.介绍了旋光,左旋亚硫酸盐异构体的晶体结构及其通过与选定亲核试剂的亲核取代反应引起的开环.© 2011 Wiley Periodicals,Inc. 杂原子化学 22:562-570,2011;置于wileyonlinelibrary.Com 上在线查看这篇文章.Doi 10.1002/hc.20722
Doi:10.1002/hc.20722

专利信息

专利号:US-4918222-A
优先权日:1984-07-27
标 题 :Process for synthesis of N-acetylglycine
发明人：LIN JIANG-JEN; KNIFTON JOHN F; YEAKEY ERNEST L
权利人:TEXACO INC
摘要:An N-acetylglycine is manufactured by reacting paraformaldehyde with an acetamide and carbon monoxide in the present of a cobalt-containing catalyst promoted by a sulfoxide or dinitride compounds. The presence of sulfoxide or dinitrile ligands are essential for the high yield synthesis of N-acetylglycine and good cobalt recovery.

专利号:US-7321070-B2
优先权日:2003-07-30
标题:Synthesis of isotopically labeled R- or S-[13C, 2H] glycerols
发明人：MARTINEZ RODOLFO A; UNKEFER CLIFFORD J; ALVAREZ MARC A
权利人:LOS ALAMOS NAT SECURITY LLC
摘要:The present invention is directed to asymmetric chiral labeled glycerols including at least one chiral atom, from one to two 13 C atoms and from zero to four deuterium atoms bonded directly to a carbon atom, e.g., (2S) [1,2- 13 C 2 ]glycerol and (2R) [1,2- 13 C 2 ]glycerol, and to the use of such chiral glycerols in the preparation of labeled amino acids.

专利号:US-6310152-B1
优先权日:2000-10-24
标题 :Synthesis of elastomeric high trans-1,4-polybutadiene
发明人：CASTNER KENNETH FLOYD
权利人:GOODYEAR TIRE & RUBBER
摘要:This invention is based upon the unexpected discovery that elastomeric trans-1,4-polybutadiene can be made by utilizing a catalyst system that is comprised of an organocobalt compound, an organoaluminum compound, a para-alkyl substituted phenol, and ortho-phenyl phenol wherein the molar ratio of the para-substituted phenol to the organoaluminum compound is within the range of about 1.2:1 to about 1.8:1, and wherein the molar ratio of the ortho-phenyl phenol to the organoaluminum compound is within the range of about 0.7:1 to about 1.3:1. Accordingly, the elastomeric trans-1,4-polybutadiene made by the process of this invention does not need to be heated, such as in a hot-house, before being used in making rubber stocks. This invention more specifically discloses a process for synthesizing elastomeric trans-1-4-polybutadiene by polymerizing 1,3-butadiene monomer in the presence of a catalyst system that is comprised of an organocobalt compound, an organoaluminum compound, a para-alkyl substituted phenol, and ortho-phenyl phenol, wherein the molar ratio of the para-substituted phenol to the organoaluminum compound is within the range of about 1.2:1 to about 1.8:1, and wherein the molar ratio of the ortho-phenyl phenol to the organoaluminum compound is within the range of about 0.7:1 to about 1.3:1.

专利号:US-5834573-A
优先权日:1997-05-21
标题 :Synthesis of trans-1,4-polybutadiene
发明人：CASTNER KENNETH FLOYD
权利人:GOODYEAR TIRE & RUBBER
摘要:By utilizing the techniques of this invention, trans-1,4-polybutadiene can be synthesized continuously to a high level of conversion utilizing a low level of a highly active cobalt-based catalyst system. The trans-1,4-polybutadiene made with the cobalt-based catalyst system of this invention also typically has a molecular weight which is acceptable for use in tire applications without the need for employing a molecular weight regulator. It is also not typically necessary to utilize a gel inhibitor, such as carbon disulfide, in the polymerizations of this invention. Since a low level of residual cobalt is present in the trans-1,4-polybutadiene which is made utilizing the catalyst system of this invention, it is much more stable than trans-1,4-polybutadiene made with standard cobalt-based catalyst systems. This invention specifically relates to a process for synthesizing trans-1,4-polybutadiene by polymerizing 1,3-butadiene monomer in the presence of a catalyst system which is comprised of cobalt (III) acetylacetonate, an organoaluminum compound and a para-alkyl-substituted phenol, wherein the cobalt (III) acetylacetonate is mixed with the para-substituted phenol prior to the polymerization. Such polymerizations can be conducted on a batch or a continuous basis.

专利号:US-6617406-B2
优先权日:2001-08-30
标 题:Synthesis of elastomeric high trans-1,4-polybutadiene
发明人：CASTNER KENNETH FLOYD
权利人:GOODYEAR TIRE & RUBBER
摘要:This invention is based upon the unexpected discovery that elastomeric trans-1,4-polybutadiene can be made by utilizing a catalyst system that is comprised of an organocobalt compound, an organoaluminum compound, a para-alkyl substituted phenol, and ortho-phenyl phenol wherein the molar ratio of the para-substituted phenol to the organoaluminum compound is within the range of about 1.2:1 to about 1.8:1, and wherein the molar ratio of the ortho-phenyl phenol to the organoaluminum compound is within the range of about 0.7:1 to about 1.3:1. Accordingly, the elastomeric trans-1,4-polybutadiene made by the process of this invention does not need to be heated, such as in a hot-house, before being used in making rubber stocks.

专利号:US-5448002-A
优先权日:1994-08-12
标 题 :Synthesis of trans-1,4-polybutadiene having controlled molecular weight
发明人：CASTNER KENNETH F
权利人:GOODYEAR TIRE & RUBBER
摘要:Trans-1,4-polybutadiene is normally synthesized utilizing transition metal or rare earth catalysts. However, molecular weight control is difficult to achieve with such catalysts and the molecular weight of the polymer produced is frequently much higher than desired. By utilizing the catalyst system and techniques of this invention, trans-1,4-polybutadiene can be synthesized continuously to a high level of conversion with molecular weight control being possible. This invention specifically relates to a process for synthesizing trans-1,4-polybutadiene by polymerizing 1,3-butadiene monomer in the presence of a catalyst system which is comprised of an organocobalt compound, an organoaluminum compound and a para-substituted phenol with molecular weight being controlled by conducting the polymerization in the presence of at least one dialkyl sulfoxide, diaryl sulfoxide or dialkaryl sulfoxide. Such polymerizations can be conducted on a batch or a continuous basis. In the case of continuous processes, it is normally desirable to conduct the polymerization in the presence of carbon disulfide as a gel inhibitor.