CAS: 100-80-1; 3-Methylstyrene

上下游产品

m-tolyl-1,4,5,6-tetrahydro-pyridazine3-m-tolyl-1,4,5,6-tetrahydro-pyridazine 2-(3-methylphenyl)ethanol acetic anhydride m-tolyl aldehyde 1-Methyl-3-ethylbenzene 1-(1,2-dichloro-ethyl)-3-methyl-benzene 1,2-dibromo-1-(3-methylphenyl)ethane 6-benzo[1,2,4]thiadiazine-7-sulfonic acid amide6-chloro-3-(3-methyl-benzyl)-1,1-dioxo-1,2,3,4-tetrahydro-1λ6-benzo[1,2,4]thiadiazine-7-sulfonic acid amide

3-乙基甲苯置于2,3-二氯-5,6-二氰基-1,4-苯醌体系中,用 1,2-二氯乙烷 用作溶剂,化学反应 4.0H,反应生成3-甲基苯乙烯
参考文献:无金属氧化脱氢狄尔斯-阿尔德反应对烷基苯的选择性功能化
标题:无金属氧化脱氢狄尔斯-阿尔德反应对烷基苯的选择性功能化
摘要:C(sp 3)-H键在无金属反应条件下的功能化是一个巨大的挑战,因为其键反应性较差.描述了一种新颖的无金属氧化脱氢狄尔斯-阿尔德反应的烷基苯衍生物与烯烃通过c(sp 3)-H键官能化.发达的氧化方法提供了一种直接途径,可从容易获得的起始原料中获得生物学上相关的1,4-蒽醌和异吲哚衍生物.此外,已经证明了通过选择性的c(sp 3)-H键官能化从苯基苯衍生物合成硝基苯乙烯.
Doi:10.1002/chem.201701535

专利信息

专利号:US-8669356-B2
优先权日:2009-10-21
标 题 :Linker and support for solid phase synthesis of nucleic acid
发明人：HAYAKAWA YOSHIHIRO; TSUKAMOTO MASAKI; MORI KENJIRO; MINOMI KENJIRO; MAETA ERI; KONISHI TATSUYA
权利人:HAYAKAWA YOSHIHIRO; TSUKAMOTO MASAKI; MORI KENJIRO; MINOMI KENJIRO; MAETA ERI; KONISHI TATSUYA; NITTO DENKO CORP; UNIV NAGOYA NAT UNIV CORP
摘要:The invention provides a universal linker capable of synthesizing nucleic acid having a phosphate group at the 3′ terminal, a universal support carrying the linker, and a synthesis method of nucleic acid using the universal support. The linker for solid phase synthesis of nucleic acid contains a compound represented by at least one of the following formulae n nwherein each symbol is as defined in the specification.

专利号:WO-2022155981-A1
优先权日:2021-01-25
标题 :USE OF N-HETEROCYCLIC CARBENE-BASED COMPOUNDED NICKEL (II) COMPLEX IN SYNTHESIS OF α-BENZYL BENZOFURAN COMPOUND
发明人：SUN HONGMEI; SHUI YU; JIN WENHUI
权利人:UNIV SOOCHOW
摘要:Disclosed is the use of an N-heterocyclic carbene-based compounded nickel (II) complex in the synthesis of an α-benzyl benzofuran compound. In the present invention, an air-stable compounded nickel (II) complex Ni[P(OEt) 3 ]{[R`NC(CH 3 )C(CH 3 )NR`]C}Br 2 is used as a catalyst, wherein R` is 2,4,6-trimethylphenyl, and the α-benzyl benzofuran compound is synthesized by means of a hydrogen heteroarylation reaction of an aryl ethylene compound and a benzofuran compound in the presence of an organic base. The operability and substrate applicability of the catalyst are obviously better than those of the prior art, and meanwhile, the nickel catalyst has a higher practical application value due to the air stability and easiness of synthesis thereof.

专利号:US-11059914-B2
优先权日:2016-12-21
标题:Method for the continuous synthesis of a diene elastomer with lithium amide initiator
发明人：DIRE CHARLOTTE; DESSENDIER MARIE-HÉLÈNE
权利人:MICHELIN & CIE
摘要:A process for the continuous synthesis of a diene elastomer is provided. The synthesis is conducted by means of n reactors r1 to rn, considered to be continuous stirred-tank reactors, which are equipped with an internal stirring system. The reactors are arranged in series, n varying from 2 to 15, preferably from 2 to 9. The reactor r1 is fed by an input solution comprising a solvent, one or more monomer(s), an anionic polymerization initiator chosen from lithium amides and a polar agent. The conversion by weight C1 in the first reactor is less than 70%, and the total conversion by weight Cn at the outlet of the reactor rn is greater than or equal to 70%.

专利号:US-10428206-B2
优先权日:2015-07-02
标 题 :Process for the continuous synthesis of a modified diene elastomer
发明人：DORATO MARGARITA; FLESINSKI LIONEL
权利人:MICHELIN & CIE
摘要:A process for the continuous synthesis of a modified diene elastomer includes:n polymerization by n reactors r1 to rn equipped with an internal stirring system, the reactor r1 being fed by an input solution comprising a solvent, one or more monomers, an anionic polymerization initiator and a polar agent, one or more of the reactors being fed by reinjection of a purified solution comprising solvent and/or monomer(s), the number of dead chains in the output stream from the reactor rn is less than 30% of the number of living chains initiated in the reactor r1, the temperature of each reactor varying from 20° C. to 150° C.; and modification of the living diene elastomer obtained in the preceding stage and exhibiting a polydispersity index varying from 1.1 to 2, making it possible to introduce, into the elastomer, a functional group comprising at least one silicon atom directly connected to the elastomer chain.

专利号:US-6107408-A
优先权日:1998-02-26
标题 :Processes for improving linking efficiencies in the synthesis of star polymers
发明人：QUIRK RODERIC PAUL; LETCHFORD ROBERT JAMES; SCHWINDEMAN JAMES ANTHONY
权利人:FMC CORP
摘要:Processes for the synthesis of star or multi-branched polymers and the resultant polymers. One or more alkadiene monomers are polymerized in the presence of suitable organometallic initiators and subsequently coupled to form star polymers. Prior to coupling, one or more alkenylsubstituted aromatic hydrocarbons are incorporated at the living ends of the polydienyl anions to provide increased linking efficiencies.

专利号:US-5336739-A
优先权日:1992-04-06
标题:Alkyl tetrahydrofurfuryl ethers as anionic polymerization modifier in the synthesis of rubbery polymer
发明人：HSU WEN-LIANG; HALASA ADEL F; MATRANA BARRY A
权利人:GOODYEAR TIRE & RUBBER
摘要:It has been unexpectedly discovered that various compounds, such as alkyl tetrahydrofurfuryl ethers, can be used to modify anionic polymerizations of conjugated diene monomers. These modifiers can be used to polymerize isoprene monomer into high 3,4-polyisoprene at excellent polymerization rates. This is in contrast to the modifiers such as tetramethylethylene diamine which are typically used to modify such polymerizations. This invention more specifically discloses a process for the synthesis of 3,4-polyisoprene which comprises polymerizing isoprene monomer in an organic solvent in the presence of a catalyst system which is comprised of (a) a lithium initiator and (b) a modifier which is an alkyltetrahydrofurfuryl ether selected from the group consisting of ethyltetrahydrofurfuryl ether, propyltetrahydrofurfuryl ether, and butyltetrahydrofurfuryl ether. In the practice of this invention, the utilization of ethyltetrahydrofurfuryl ether is highly preferred since its use results in faster polymerization rates and higher vinyl contents in the resultant polymer.