CAS: 58775-05-6; 2,7-Di-Tert-Butylfluorene

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CAS号86-73-7 芴 | CAS号507-20-0 氯代叔丁烷 | CAS号128-37-0 抗氧剂BHT | CAS号58775-13-6 2,7-Di-tert-but... | CAS号1625-91-8 4,4'-二叔丁基联苯 | CAS号7446-70-0 氯化铝 | CAS号28322-02-3 4-乙酰氨基芴 | CAS号287381-46-8 2,7-二叔丁基-9-芴甲基氯甲酸酯 | CAS号1556-99-6 4-甲基芴 | CAS号136480-41-6 (2,7-ditert-but... | CAS号136453-59-3 2,7-二叔丁基-9-芴基甲醇 | CAS号797757-60-9 [2,7-ditert-but... | CAS号58775-13-6 2,7-Di-tert-but... | CAS号60758-15-8 7-TERTBUTYL-2-N... | CAS号91611-99-3 9H-Fluorene, 2,... | CAS号64527-43-1 2,7-ditert-buty...

4,4'-二叔丁基苯并置于氢氧化钾,正丁基锂,四甲基乙二胺,一水合肼体系中,用 乙醚,正己烷,二乙二醇二甲醚,水 作为反应溶剂,化学反应生成 2,7-二叔丁基芴
参考文献:Efficient Method For The Synthesis Of Hetarenoindanones Based On 3-Arylhetarenes And Their Conversion Into Hetarenoindenes
标题:Efficient Method For The Synthesis Of Hetarenoindanones Based On 3-Arylhetarenes And Their Conversion Into Hetarenoindenes
摘要:A Series Of Hetarenoindanones Have Been Prepared By Direct Double Metalation Of The Appropriate 3-Phenylhetarene With Butyllithium In The Presence Of Tmeda Followed By Treatment Of The Resulting Dilithium Compound With Ethyl Niv-Dimethylcarbamate. All Hetarenoindanones Were Reduced According To Wolff-Kishner By Hydrazine In The Presence Of Koh To The Corresponding Hetarenoindenes.
DOI:10.1021/jo049504W

专利信息

专利号:US-11498985-B2
优先权日:2017-04-18
标题:Continuous synthesis of an ethylene and butadiene copolymer
发明人：THUILLIEZ JULIEN; PACHECO NUNO
权利人:MICHELIN & CIE
摘要:A process for the synthesis of an ethylene/butadiene copolymer is provided. The process is continuous and comprises the following steps:n a. feeding at least one stirred polymerization reactor with a mixture of ethylene, butadiene, hydrocarbon-based solvent and catalytic system allowing the formation of cyclic trans-1,2-cyclohexane units in the polymer chain with a mole ratio of ethylene to the sum of the ethylene and butadiene monomers ranging from 0.5 to 0.99; the concentration of ethylene and butadiene monomers in the polymerization reaction medium being less than 15% by weight; the operating pressure of the reactor is greater than or equal to the saturated vapour pressure of the polymerization reaction medium; and the polymerization temperature is greater than 90° C.; b. recovering the ethylene/butadiene copolymer, this copolymer comprising, statistically distributed, ethylene units, butadiene units and trans-1,2-cyclohexane units, the molar fraction of ethylene units in the copolymer being greater than or equal to 50%.

专利号:US-11136422-B2
优先权日:2017-04-18
标题:Continuous synthesis of an ethylene and butadiene copolymer
发明人：THUILLIEZ JULIEN; PACHECO NUNO
权利人:MICHELIN & CIE
摘要:A process for the synthesis of an ethylene/butadiene copolymer is provided. The process is continuous and comprises: n a. feeding at least one stirred polymerization reactor with a mixture of ethylene, butadiene, hydrocarbon-based solvent and catalytic system allowing the formation of cyclic trans-1,2-cyclohexane units in the polymer chain with a mole ratio of ethylene to the sum of the ethylene and butadiene monomers ranging from 0.5 to 0.99; the concentration of ethylene and butadiene monomers in the polymerization reaction medium being at least 10% by weight relative to the total weight; the operating pressure of the reactor is greater than or equal to the saturated vapour pressure of the polymerization reaction medium; n b. recovering the ethylene/butadiene copolymer, this copolymer comprising, statistically distributed, ethylene units, butadiene units and trans-1,2-cyclohexane units, the molar fraction of ethylene units in the copolymer being greater than or equal to 50%.

专利号:US-11326001-B2
优先权日:2018-03-19
标题:Copolymer of ethylene and of myrcene
发明人：LAFAQUIERE VINCENT; MORESO EMMA
权利人:MICHELIN & CIE
摘要:A copolymer of ethylene and of myrcene, in which the ethylene units represent between 50 mol % and 95 mol % of the ethylene units and of the myrcene units, and the myrcene units of 1,2 and 3,4 configuration represent more than 50 mol % of the myrcene units, is provided. Such a copolymer exhibits an improved compromise between the degree of crystallinity and the stiffness. It therefore makes it possible to widen the field of application of ethylene-rich diene copolymers in rubber compositions, and also to increase the production capacity of a unit for the synthesis of ethylene-rich diene polymers.

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-7064225-B2
优先权日:2004-06-25
标题 :Synthesis of ansa-metallocenes and their parent ligands in high yield
发明人：THORN MATTHEW G; MARTIN JOEL L; YANG QING; MASINO ALBERT P
权利人:CHEVRON PHILLIPS CHEMICAL CO
摘要:The present invention provides a method of making compounds comprising linked cyclopentadienyl and fluorenyl groups, including substituted analogs thereof, which are precursors to ansa-metallocenes comprising bridged cyclopentadienyl and fluorenyl ligands. In one aspect, this invention provides a preparative method for (5-cyclopentadienyl)[5-(2,7-di-tert-butylfluorenyl)]hex-1-ene, and ansa-metallocenes comprising this ligand.

专利号:US-2005285284-A1
优先权日:2004-06-25
标 题:Synthesis of ansa-metallocenes and their parent ligands in high yield