CAS: 507-19-7; 2-Bromo-2-Methylpropane

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CAS号75-65-0 叔丁醇 | CAS号78-86-4 2-氯丁烷 | CAS号507-20-0 氯代叔丁烷 | CAS号75-28-5 异丁烷 | CAS号558-17-8 2-碘-2-甲基丙烷 | CAS号115-11-7 2-甲基丙烯 | CAS号109-69-3 1-氯丁烷 | CAS号1634-04-4 甲基叔丁基醚 | CAS号201230-82-2 carbon monoxide | CAS号100-39-0 溴化苄 | CAS号1081-32-9 6-tert-butylnap... | CAS号1071-26-7 2,2-二甲基庚烷 | CAS号124-18-5 正癸烷 | CAS号110721-24-9 ethyl 2-[(2-met... | CAS号23204-80-0 (E)-1-chloro-3-... | CAS号106175-40-0 1-chloro-3-(4,4... | CAS号106175-41-1 (E)-1-chloro-3-... | CAS号3972-56-3 1-叔丁基-4-氯苯 | CAS号556-24-1 异戊酸甲酯 | CAS号598-98-1 特戊酸甲酯

叔丁基肼盐酸盐置于三溴化硼,二甲基亚砜体系中,化学反应 1.0H,以14%的收率获得产物溴代叔丁烷
参考文献:由芳基肼无金属和无碱合成芳基溴化物
标题:由芳基肼无金属和无碱合成芳基溴化物
摘要:通过在空气中于80oc在dmso / Cpme(环戊基甲基醚)中使用bbr 3,在不使用碱或金属催化剂的情况下,开发了一种从芳基肼盐酸盐合成溴化芳族化合物的有效方法.特别地,该方法可以使用吸电子基团令人满意地进行,以中等至优异的产率提供芳基溴化物.
DOI:10.1016/j.Tetlet.2020.151959

专利信息

专利号:US-2006128930-A1
优先权日:2004-12-03
标题 :Synthesis of sterically hindered phenol based macromolecular antioxidants
发明人：DHAWAN ASHISH; CHOLLI ASHOK L
权利人:DHAWAN ASHISH; CHOLLI ASHOK L
摘要:Disclosed is a method for the synthesis of sterically hindered polymeric antioxidants based on phenol type antioxidant monomers. The method includes polymerizing and alkylating a phenol containing monomer represented by the following structural formula: n n nto produce a sterically hindered polymeric macromolecular antioxidant. X, R 10 and q are as defined herein. The disclosed method is a simple, direct and economical process for the synthesis of sterically hindered polymeric macromolecular antioxidants.

专利号:US-7678877-B2
优先权日:2004-12-03
标题 :Process for the synthesis of polyalkylphenol antioxidants
发明人：YANG SUIZHOU; CHOLLI ASHOK L
权利人:POLNOX CORP
摘要:Disclosed is a method for the synthesis of sterically hindered polymeric antioxidants based on phenol type antioxidant monomers. The method includes partially etherifying, polymerizing and thermally rearranging a phenol containing monomer represented by the following structural formula: n nto produce a sterically hindered polymeric macromolecular antioxidant. X, R 10 and q are as defined herein. The disclosed method is a simple, direct and economical process for the synthesis of sterically hindered polymeric macromolecular antioxidants.

专利号:US-5502126-A
优先权日:1993-06-17
标 题 :Process for the synthesis of isoprene butadiene rubber
发明人：BELL ANTHONY J; MATRANA BARRY A; HALASA ADEL F
权利人:GOODYEAR TIRE & RUBBER
摘要:The subject invention relates to a technique for synthesizing rubbery non-tapered, random, copolymers of 1,3-butadiene and isoprene. These rubbery copolymers exhibit an excellent combination of properties for utilization in tire sidewall rubber compounds for truck tires. By utilizing these isoprene-butadiene rubbers in tire sidewalls, tires having improved cut growth resistance can be built without sacrificing rolling resistance. Such rubbers can also be employed in tire tread compounds to improve tread wear characteristics and decrease rolling resistance without sacrificing traction characteristics. This invention more specifically discloses a process for the synthesis of isoprene-butadiene rubbers which comprises copolymerizing isoprene monomer and 1,3-butadiene monomer in an organic solvent in the presence of a catalyst system which is made by the sequential steps of (1) mixing (a) an organoaluminum hydride, (b) a member selected from the group consisting of aliphatic alcohols, cycloaliphatic alcohols, aliphatic thiols, cycloaliphatic thiols, trialkyl silanols, and triaryl silanols, and (c) optionally, 1,3-butadiene in an organic solvent to produce a modified organoaluminum catalyst component; (2) adding an organometallic compound which contains a metal from Group III-B of the Periodic System to the modified organoaluminum catalyst component to produce a Group III-B metal containing catalyst component; and (3) adding a compound which contains at least one labile halogen atom to the Group III-B metal containing catalyst component.

专利号:US-2014309424-A1
优先权日:2011-06-30
标题:Direct synthesis of 18f-fluoromethoxy compounds for pet imaging and the provision of new precursors for direct radiosynthesis of protected derivatives of o-([18f] fluoromethyl) tyrosine
发明人：BRUMBY THOMAS; GRAHAM KEITH; KRUGER MARTIN
权利人:BRUMBY THOMAS; GRAHAM KEITH; KRUGER MARTIN; PIRAMAL IMAGING SA
摘要:The invention describes novel direct synthesis methods for converting a precursor into a PET-tracer with a 18 F-fluoromethoxy-group. The invention is also directed to novel and stable precursors for the direct radiosynthesis of protected derivatives of O—([ 18 F]Fluoromethyl)tyrosines.

专利号:US-5484883-A
优先权日:1990-06-25
标题 :Lithium/HMPA-promoted synthesis of poly(phenylenes)
发明人：TOUR JAMES M; STEPHENS ERIC B
权利人:UNIV SOUTH CAROLINA
摘要:Poly(phenylene) that is substantially free of insoluble material is prepared by the polymerization of a lithioarylhalide compound in the presence of a polar aprotic compound such as hexamethylphosphoramide, N,N,N',N'-tetramethylethylenediamine or hexamethylphosphorous triamide. The preferred reaction involves the polymerization of 1-bromo-4-lithiobenzene in the presence of hexamethylphosphoramide. The 1-bromo-4-1ithiobenzene may be synthesized by reacting 1,4-dibromobenzene with t-butyllithium. These same types of reactions can also be used to synthesis other benzenoid polymers.

专利号:US-8933181-B2
优先权日:2006-10-06
标题:Branched polymers and methods for their synthesis and use
发明人：MOURI HIROSHI; LUO STEVEN; KURASCH JESSICA; ROBERTSON CHRISTOPHER G; WARREN SANDRA
权利人:MOURI HIROSHI; LUO STEVEN; KURASCH JESSICA; ROBERTSON CHRISTOPHER G; WARREN SANDRA; BRIDGESTONE CORP
摘要:Branched polymers including multi-branched polymers, functionalized branched polymers, star-branched polymers, and dendigraft polymers. Methods for the synthesis of branched polymers and method for the use of branched polymers in tire components are also included.