CAS: 1014-60-4; 1,3-Di-Tert-Butylbenzene

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1460-02-2 15181-11-0 98-19-1

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CAS号22385-77-9 3,5-二叔丁基溴苯 | CAS号93131-76-1 1-(1,1,2,2,3,3,... | CAS号1071592-55-6 2,4-di-tert-but... | CAS号75-24-1 三甲基铝 | CAS号37055-53-1 1,3-二叔丁基-5-碘苯 | CAS号71-43-2 苯 | CAS号124-38-9 二氧化碳 | CAS号2455-14-3 3,3',5,5'-四叔丁基-... | CAS号96-76-4 2,4-二叔丁基酚 | CAS号1012-72-2 1,4-二叔丁基苯 | CAS号1460-02-2 1,3,5-三叔丁基苯 | CAS号128-39-2 2,6-二叔丁基苯酚 | CAS号13733-11-4 1,5-ditert-buty... | CAS号16225-26-6 3,5-叔丁基苯甲酸 | CAS号37055-53-1 1,3-二叔丁基-5-碘苯 | CAS号1756-31-6 1-(3,5-di-tert-...

1-溴-2,4,6-三叔丁基苯置于吡啶,Copper(L) Iodide,氯化亚砜,氢溴酸体系中,用 乙醚,氘代氯仿,水 用作溶剂,化学反应 67.0H,反应生成1,3-二叔丁基苯
参考文献:Highly Syn Selective Addition Of Aqueous Hbr To Hydrophobically Shielded Arylalkynes
标题:Highly Syn Selective Addition Of Aqueous Hbr To Hydrophobically Shielded Arylalkynes
摘要:Hydrophobically Shielded Alkynes Hc C-Aryl,Carrying 2,6-Di-And 2,4,6-Tri-Tert-Butylphenyl As The Aryl Group,Can Add Aqueous Hbr On Heating In Moist Chloroform Solutions To Produce Pure H2C=c(-Br)-Aryl (Isolated Yields 96%,No Hydrolysis). Employment Of Dc C-Aryl Furnished Initially Only The E Stereoisomer Of Dhc=c(-Br)-Aryl (Stereospecific Syn Addition),Which Was Slowly Both Dedeuteriated And Partially Transformed To The Z Stereoisomer By Hbr. The Strongly Retarded Hbr Addition To H3C-C C-Aryl In Moist Chloroform Produced Again More E Than Z Product,Whereas A Thermodynamic E/z Ratio Of 10:87 Was Found In Moist Acetic Acid. Substitution Of Br By Lisnme3 Produced H2C=c(-Snme3)-Aryl With Well Resolved Long Range Sn-119 NMR Coupling Constants. (C) 2014 Elsevier Ltd. All Rights Reserved.
Doi:10.1016/j.Tet.2014.05.002

专利信息

专利号:US-11161827-B2
优先权日:2019-04-05
标 题 :Catalytic systems for stereoselective synthesis of chiral amines by enantiodivergent radical C—H amination
发明人：Zhang xiao-xiang; Lang kai
权利人:TRUSTEES BOSTON COLLEGE; THE TRUSTEES OF BOSTON COLLEGE
摘要:In one aspect, the disclosure relates to a mode of asymmetric induction in radical processes based on sequential combination of enantiodifferentiative H-atom abstraction and stereoretentive radical substitution. Also disclosed is an asymmetric system for stereoselective synthesis of strained 5-membered cyclic sulfamides via radical 1,5-C—H amination of sulfamoyl azides. The disclosed metalloradical system can control the degree and sense of asymmetric induction in the catalytic radical C—H amination in a systematic manner. The disclosed system is applicable to a broad scope of substrates with different types of C(sp 3 )—H bonds and exhibits reactivity and selectivity, providing access to both enantiomers of useful 5-membered cyclic sulfamides in a highly enantioenriched form. Also disclosed are catalysts useful in these processes. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.

专利号:US-6479599-B1
优先权日:1997-04-04
标题:Catalyst system for high yield synthesis of polyolefins
发明人：PEIL KEVIN P; WILSON DAVID R
权利人:BP CHEM INT LTD
摘要:This invention relates to a supported metallocene catalyst system for the high yield synthesis of polyolefins, to methods of preparation of the catalyst system, to polymerization processes which use the catalyst system and to polyolefin polymers produced by the polymerization processes.

专利号:US-6916982-B2
优先权日:2000-07-21
标题:Synthesis of perylene-porphyrin building blocks and polymers thereof for the production of light-harvesting arrays
发明人：LOEWE ROBERT S; TOMIZAKI KIN-YA; LINDSEY JONATHAN S
权利人:UNIV NORTH CAROLINA STATE
摘要:The present invention provides methods, compounds, and compositions for the synthesis of light harvesting arrays, such arrays comprising: (a) a first substrate comprising a first electrode; and (b) a layer of light harvesting rods electrically coupled to said first electrode, each of said light harvesting rods comprising a polymer of Formula I:n nX 1 X m+1 ) m   (I)n nwherein m is at least 1; X 1 is a charge separation group, and X 2 through X m+1 are chromophores. At least one of X 2 through X m+1 has at least one perylene group coupled thereto.

专利号:US-11794179-B2
优先权日:2016-08-24
标 题 :Synthesis and characterization of metathesis catalysts
发明人：JOHNS ADAM M
权利人:UMICORE AG & CO KG
摘要:This invention relates generally to olefin metathesis catalysts, to the preparation of such compounds, compositions comprising such compounds, methods of using such compounds, and the use of such compounds in the metathesis of olefins and in the synthesis of related olefin metathesis catalysts. The invention has utility in the fields of catalysis, organic synthesis, polymer chemistry, and in industrial applications such as oil and gas, fine chemicals and pharmaceuticals.

专利号:US-7199274-B2
优先权日:2002-10-22
标 题:Preparation of substituted indenes
发明人：SCHULTE JOERG; SCHOTTEK JOERG; FISCH LOTHAR
权利人:BASELL POLYOLEFINE GMBH
摘要:The present invention relates to a simple process for preparing specifically substituted indenes of the formula (I) or (Ia) n nto compounds of the formula (II) serving as starting materialsn n nand to the use of the compounds of the formula (II) as starting materials for the synthesis of substituted indenes.

专利号:US-7368616-B2
优先权日:2002-10-30
标题 :Method for the production of monomers useful in the manufacture of semiconductive polymers
发明人：WALLACE PAUL; TOWNS CARL; POUNDS THOMAS
权利人:MERCK PATENT GMBH
摘要:The instant invention relates to a new method for the synthesis of monomers and their use inter alia in the manufacture of semiconductive polymers. Monomers, in particular, asymmetric monomers, such as asymmetric fluorene compounds, are valuable material in the manufacture of semiconductive polymers. The know methods for producing asymmetric monomers, such as asymmetric fluorene compounds, are expensive due to the formation of by-products. n The method according to the present invention avoids the formation of such by-products and is described in more detail in claims 1 to 14.