CAS: 25015-63-8; 4,4,5,5-Tetramethyl-1,3,2-Dioxaborolane

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25240-59-9 94242-85-0 61676-62-8

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CAS号637-92-3 乙基叔丁基醚 | CAS号73183-34-3 双戊酰二硼 | CAS号76-09-5 频哪醇 | CAS号109-66-0 正戊烷 | CAS号71-43-2 苯 | CAS号111-65-9 正辛烷 | CAS号13292-87-0 硼烷二甲硫醚 | CAS号68654-52-4 2-哌啶基吡啶 | CAS号7226-23-5 N,N-二甲基丙烯基脲 | CAS号108-38-3 间二甲苯 | CAS号1072009-08-5 5-氟-4-(四甲基-1,3,... | CAS号1040281-84-2 2-(4-氯噻吩-2-基)-4... | CAS号1040281-97-7 3-氯噻吩-2-硼酸频哪醇酯 | CAS号1111096-20-8 2-(4-氯-3,5-二甲基苯... | CAS号1046812-03-6 4,5-二氢呋喃-3-硼酸频那醇酯 | CAS号1046812-02-5 2,3-二氢-5-呋喃基硼酸频哪醇酯 | CAS号1046862-08-1 2-(2,4-dichloro... | CAS号325142-95-8 2,6-二甲基吡啶-4-硼酸频那醇酯 | CAS号171364-79-7 4-甲氧基苯硼酸频那醇酯 | CAS号190788-60-4 2-甲氧基苯硼酸频哪酯

频哪醇置于dimethyl Sulfide Borane体系中,用 二氯甲烷 用作溶剂,化学反应生成频那醇硼烷
参考文献:六和八溴芳烃的六倍和八倍钯催化的交叉偶联反应.
标题:六和八溴芳烃的六倍和八倍钯催化的交叉偶联反应.
摘要:钯催化六溴代苯(20)与各种烯基硼酸酯和烯基锡酮的六重偶联分别提供了六烯基苯1,产率分别高达73%和16%至41%.在某些情况下,五烯基苯21被分离为主要产物(最高含量为75%).还已经制备了一些在其六个臂中的每个臂中含有氧或硫原子的官能取代的六烯基苯衍生物(16%至24%的收率).较少空间阻碍的2,3,6,7,10,11-六溴代三亚苯基(24)的六倍偶联以93%的收率获得了所需的六(3,3-二甲基-1-丁烯基)三亚苯基(25).八溴萘(26)的首次成功的交叉偶联反应以21%的收率获得了八-(3,3-二甲基-1-丁烯基)萘(27).晶体结构分析表明,根据取代基的性质,这六个臂与1A和1I一样全部位于中心苯环的同一侧,从而使它们成杯形分子,或者在1H和23中交替地位于中心平面的上方和下方.在27中,C-1,4,6,7的四个臂向下,其他的臂向上,反之亦然.催化氢化后,1 A产生89%的六(叔
Doi:10.1002/chem.200400723

专利信息

专利号:US-7148356-B2
优先权日:2001-07-13
标题:Process for the catalytic synthesis of biaryls and polymers from aryl compounds
发明人：SMITH III MILTON R; MALECZKA ROBERT E
权利人:UNIV MICHIGAN STATE
摘要:A process for producing organic substituted aromatic or heteroaromatic compounds including biaryl and biheteroaryl compounds in a two-step reaction. In the first step, the aromatic or heteroaromatic compound is borylated in a reaction comprising a borane or diborane reagent (any boron reagent where the boron reagent contains a B—H, B—B or B—Si bond) and an iridium or rhodium catalytic complex. In the second step, a metal catalyst catalyzes the formation of the organic substituted aromatic or heteroaromatic compound from the borylated compound and an electrophile such as an aryl or organic halide, triflate (OSO 2 CF 3 ), or nonaflate (OSO 2 C 4 F 9 ). The steps in the process can be performed in a single reaction vessel or in separate reaction vessels. The present invention also provides a process for synthesis of complex polyphenylenes starting from halogenated aromatic compounds.

专利号:US-9994508-B2
优先权日:2012-12-11
标 题:Versatile and functionalised intermediates for the synthesis of vitamin D and novel vitamin D derivatives
发明人：LOPEZ PEREZ BORJA; SIGUEIRO PONTE RITA; MAESTRO SAAVEDRA MIGUEL A; MOURINO MOSQUERA ANTONIO
权利人:ENDOTHERM GMBH
摘要:Novel intermediates for the complete synthesis of vitamin D are provided that allow a great versatility of functional groups in the final vitamin derivatives. Vitamin derivatives that are epimeric in position 3 and vitamin derivatives with a wide range of functionalities in position 18, including compounds with isotopic labelling are provided.

专利号:US-2020079715-A1
优先权日:2018-09-06
标题 :2-position modification for synthesis of resorcinol scaffolding
发明人：DAVIS ROBERT; BLACK JACOB; SMELTZER THOMAS; COLVIN SEAN
权利人:CANOPY HOLDINGS LLC
摘要:A resorcinol with modifications at the 2-position is provided. The reactant resorcinol may have a variety of functional groups at each of the 1, 3, and 5 position such as a hydroxide, a lower alkyl group, a phenyl, a substituted phenyl, a lower alkenyl, or a lower alkynyl sp 2 carbon group (e.g., substituted phenyl, vinyl), sp (e.g., alkyne), hydrogen. The resorcinol is modified at the 2-position with a nucleophile or an electrophile. The resulting resorcinol may serve as a stable intermediate for the synthesis of cannabinoid or cannabinoid derivatives.

专利号:WO-2016122325-A1
优先权日:2015-01-30
标 题:Methods for providing intermediates in the synthesis of atorvastatin.
发明人：DÖMLING ALEXANDER STEPHAN SIEGFRIED
权利人:UNIV GRONINGEN
摘要:The invention relates to the field of medicinal chemistry, In particular, it relates to methods for providing intermediates in the synthesis of Atorvastatin, a competitive inhibitor of HMG-Co A reductase. Provided is a process for providing a compound having a Formula (I) or a pharmaceutically acceptable salt, ester, amide or stereoisomer thereof, comprising reacting in a 4 component Ugi-reaction in a single reaction mixture the compounds of formula A, formula B, formula C and formula D.

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-6958420-B2
优先权日:2002-07-19
标题:Synthesis of aminoarylboronic esters and substituted anilines from arenes via catalytic C-H activation/borylation/amination and uses thereof
发明人：MALECZKA JR ROBERT E; SMITH III MILTON R; HOLMES DANIEL
权利人:UNIV MICHIGAN STATE
摘要:A process is described for synthesizing aminoarylboronic esters of the general formula n n nwherein R, R 2 , and R 3 are each an alkyl, aryl, vinyl, alkoxy, carboxylic esters, amides, or halogen; Ar is any variety of phenyl, naphthyl, anthracyl, heteroaryl; and R 1 is alkyl, hydrogen, or aryl. The aminoarylboronic esters are produced via the metal-catalyzed coupling of arylboronic esters of the general formula n n nwherein R and R 1 are any non-interfering group and X is chloro, bromo, iodo, triflates, or nonaflates to amines (primary and secondary). In particular, a process is described for the synthesis of the aminoarylboronic esters via a step-wise or tandem process in which one catalytic event is a metal-catalyzed borylation and the other catalytic event is a metal-catalyzed amination.