CAS: 59159-39-6; (2-(Tert-Butoxy)-2-Oxoethyl)Triphenylphosphonium Bromide

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CAS号5292-43-3 溴乙酸叔丁酯 | CAS号603-35-0 三苯基膦 | CAS号35000-37-4 (叔丁氧基羰基甲基)氯化三苯基磷 | CAS号144374-53-8 (E)-tert-Butyl ... | CAS号103890-69-3 3-(2-甲酰基苯基)-2-(... | CAS号103890-78-4 拉西地平 | CAS号845883-04-7 E-Caffeic acid-...

📜溴乙酸叔丁酯,三苯基膦 以 甲苯 作为反应溶剂,以86%的收率获得产物(叔丁氧基羰基甲基)三苯基溴化鏻
参考文献:Methyl Caffeate As An α-Glucosidase Inhibitor Fromsolanum Torvumfruits And The Activity Of Related Compounds
标题:Methyl Caffeate As An α-Glucosidase Inhibitor Fromsolanum Torvumfruits And The Activity Of Related Compounds
摘要:在日本南岛种子岛栽培的325种植物中,筛选大鼠肠道α-葡萄糖苷酶(蔗糖酶和麦芽糖酶)抑制剂的实验发现,茄属植物solanum Torvum果实提取物对蔗糖酶和麦芽糖酶均有显著抑制作用.通过酶活性导向的提取物分级分离,得到了作为大鼠肠道蔗糖酶和麦芽糖酶抑制剂的咖啡酸甲酯(1).我们检测了13种咖啡酸衍生物对蔗糖酶和麦芽糖酶的抑制活性.结果显示,咖啡酸甲酯(1)在蔗糖酶和麦芽糖酶抑制方面具有最优的结构,除了对蔗糖酶活性更高的3,4,5-三羟基肉桂酸甲酯(14)外.其对α-葡萄糖苷酶的中等抑制作用为solanum Torvum果实的抗糖尿病用途提供了前景.
DOI:10.1271/bbb.90789

专利信息

专利号:US-6613910-B2
优先权日:2001-04-02
标题 :One-pot synthesis of group 8 transition metal carbene complexes useful as olefin metathesis catalysts
发明人：GRUBBS ROBERT H; MORGAN JOHN P; BENITEZ DIEGO; LOUIE JANIS
权利人:CALIFORNIA INST OF TECHN
摘要:The invention provides a novel method for synthesizing transition metal carbene complexes useful as olefin metathesis catalysts. The method is a convenient one-pot synthesis in which transition metal carbenes are prepared in high yield from readily available starting materials via a dihydrogen complex containing two different anionic ligands, preferably a phosphine and a heteroatom-stabilized carbene. The invention additionally provides a method for synthesizing precursors to carbene ligands useful, inter alia, in the aforementioned one-pot synthesis. The precursors are in the form of trichloromethyl adducts of the formula L 1 -CCl 3 , where L 1 is a heteroatom-stabilized carbene ligand, and are prepared by contacting an unsaturated, ionized analog of L-CCl 3 with a non-nucleophilic base in the presence of chloroform.

专利号:US-2013266807-A1
优先权日:2010-12-15
标 题:Method of manufacturing carbon fiber
发明人：KAMBARA EIJI
权利人:KAMBARA EIJI; SHOWA DENKO KK
摘要:A method of manufacturing carbon fibers, the method comprising the steps of: obtaining a supported catalyst by allowing a main catalyst element such as Fe, Co and Ni and a co-catalyst element such as Ti, V, Cr, W and Mo to be supported by a particulate carrier such as calcium carbonate, calcium hydroxide and calcium oxide; synthesizing fibrous carbons by contacting the supported catalyst with a carbon atom-containing material at synthesis reaction temperature; and then heat treating the resulting fibrous carbons at a temperature of 2000° C. or higher, wherein the particulate carrier comprising a substance which undergoes pyrolysis near the synthetic reaction temperature.

专利号:US-6608154-B2
优先权日:1999-12-31
标 题 :Process for synthesizing trans polydiene rubber
发明人：HALASA ADEL FARHAN; HSU WEN-LIANG; AUSTIN LAURIE ELIZABETH; JASIUNAS CHAD AARON
权利人:GOODYEAR TIRE & RUBBER
摘要:The process and catalyst system of this invention can be utilized to synthesize polybutadiene rubber having a high trans content and a low melting point by solution polymerization. The trans-polybutadiene rubber made by the process of this invention can be utilized in tire tread rubbers that exhibit outstanding wear characteristics. More importantly, the trans-polybutadiene rubber of this invention can be easily processed because of its low level of crystallinity. In fact, the trans-polybutadiene made by the process of this invention does not need to be heated in a 'hot-house' before being used in making rubber compounds. The process and catalyst system of this invention can also be used in the synthesis of trans-styrene-butadiene rubber (SBR). This invention more specifically reveals a process for synthesizing trans-polybutadiene rubber which comprises polymerizing 1,3-butadiene in an organic solvent in the presence of a catalyst system which comprises (a) an organolithium compound, (b) a barium compound selected from the group consisting of (i) barium salts of cyclic alcohols, such as barium mentholate, and (ii) barium thymol, and (c) an organoaluminum compound.

专利号:US-8859785-B2
优先权日:2009-05-29
标 题 :Volatile group 2 metal precursors
发明人：NORMAN JOHN ANTHONY THOMAS
权利人:NORMAN JOHN ANTHONY THOMAS; AIR PROD & CHEM
摘要:A compound comprising one or more polyfunctionalized pyrrolyl anions coordinated to a metal selected from the group consisting of barium, strontium, magnesium, radium or calcium or mixtures thereof. Alternatively, one anion can be substituted with and a second non-pyrrolyl anion. n Synthesis of the novel compounds and their use to form BST films is also contemplated.

专利号:JP-2006188682-A
优先权日:2004-12-31
标 题 :Catalysts for the synthesis of highly trans-structured polymers

专利号:US-2003100782-A1
优先权日:2001-04-02
标 题 :One-pot synthesis of group 8 transition metal carbene complexes useful as olefin metathesis catalysts