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正十六烷置于mcm-41体系中,化学反应生成 丙烷
参考文献:Textural,Structural And Acid Properties Of A Catalytically Active Mesoporous Aluminosilicate Mcm-41
标题:Textural,Structural And Acid Properties Of A Catalytically Active Mesoporous Aluminosilicate Mcm-41
摘要:合成的,煅烧的和催化测试的mcm-41材料通过77 K下的n2吸附/脱附,1H,27Al和29Si魔角旋转(Mas)核磁共振(NMR)以及程序升温氨脱附(Tpad)与原位傅里叶变换红外(Ftir)进行了全面的表征.mcm-41的29Si Mas NMR谱与非晶硅酸盐非常相似,表明该材料中si-o-si键角范围广泛.从1H Mas NMR和ftir与tpad结合研究的所得结果表明,经洗涤,无模板剂的mcm-41及其质子形式具有固体酸的性质,酸强度分布广泛.关于研究中的mcm-41材料中桥接羟基团的存在,这两种方法的发现并不一致.因此,假设ftir光谱中3650至3400 Cm-1之间的广泛吸收与氢键连接的邻近硅烷醇对有关.在27Al Mas NMR谱中,位于40 Ppm的信号被鉴定为独立的共振峰,优先归因于孤立的外网络四配位铝物种,同时五配位网络铝物种的归属也被考虑.煅烧后,这些物种重新插入网络位置.随后的催化测试导致前共振峰的部分恢复.催化测试的结果表明,弱布朗斯台德酸位点与邻近的配位不饱和铝物种相互作用,协同形成更强的酸位点.
DOI:10.1039/ft9969204623

专利信息

专利号:US-10995049-B2
优先权日:2019-07-19
标 题 :Total synthesis of prostaglandin J natural products and their intermediates
发明人：LI JIAMING; XU CHEN; AHMED TONIA S; GRUBBS ROBERT H; STOLTZ BRIAN M
权利人:CALIFORNIA INST OF TECHN
摘要:The present disclosure is directed to methods of preparing prostaglandin J natural products by stereoretentive metatheses reactions and intermediates used in the synthesis of these natural products, including the use of intermediates of Formula (I-A), where R 1 is defined in the specification

专利号:WO-2021014395-A1
优先权日:2019-07-24
标题:Process for the synthesis of deuterated capsaicin, capsaicinoids and synthetic capsaicin analogs
发明人：ORUGANTI SRINIVAS; AMRUTAPU SRAVANTH KUMAR; SAMPATH MAGESH; SEN SAIKAT
权利人:DR REDDY’S INST OF LIFE SCIENCES
摘要:The present application provides novel processes for the synthesis of deuterated intermediates of capsaicinoids, particularly II, III, IV and V of capsaicinoids, relating to pharmaceutical applications. The invention also provides novel intermediates of compounds of formula IX, XIV, XV, XVI, XVII, XVIII, XX and XXI utilized in the process of making deuterated capsaicin II, III, IV and V.

专利号:US-6794534-B2
优先权日:2000-06-23
标题:Synthesis of functionalized and unfunctionalized olefins via cross and ring-closing metathesis
发明人：GRUBBS ROBERT H; CHATTERJEE ARNAB K; MORGAN JOHN P; SCHOLL MATTHIAS; CHOI TAE-LIM
权利人:CALIFORNIA INST OF TECHN
摘要:The invention is directed to the cross-metathesis and ring-closing metathesis reactions between geminal disubstituted olefins and terminal olefins, wherein the reaction employs a Ruthenium or Osmium metal carbene complex. Specifically, the invention relates to the synthesis of α-functionalized or unfunctionalized olefins via intermolecular cross-metathesis and intramolecular ring-closing metathesis using a ruthenium alkylidene complex. The catalysts preferably used in the invention are of the general formula n wherein: n M is ruthenium or osmium; n X and X 1 are each independently an anionic ligand; n L is a neutral electron donor ligand; and, n R, R 1 R 6 , R 7 , R 8 , and R 9 are each independently hydrogen or a substituent selected from the group consisting of C 1 -C 20 alkyl, C 2 -C 20 alkenyl, C 2 -C 20 alkynyl, aryl, C 1 -C 20 carboxylate, C 1 -C 20 alkoxy, C 2 -C 20 alkenyloxy, C 2 -C 20 alkynyloxy, aryloxy, C 2 -C 20 alkoxycarbonyl, C 1 -C 20 alkylthio, C 1 -C 20 alkylsulfonyl and C 1 -C 20 alkylsulfinyl.

专利号:WO-2013138200-A1
优先权日:2012-03-13
标 题 :Green chemistry synthesis of the malaria drug amodiaquine and analogs thereof
发明人：FORTUNAK JOSEPH MARIAN; KULKARNI AMOL ANANT; KING CHRISTOPHER
权利人:UNIV HOWARD
摘要:Methods are provided for a green chemistry one-pot synthesis of amodiaquine and amodiaquine analogs. The methods have a lower environmental impact, lower investment cost, reduced amounts of byproducts and impurities, and a shorter synthesis time, compared to current conventional synthesis methods. The methods reduce the total number of steps in the synthesis from four to five down to two, thereby simplifying production; and allow a reduced number of solvents and reagents to be used in production, thereby reducing the waste generated in the synthesis. The methods can reduce the waste to about 3-5 kilograms of waste generated per kilogram of product produced; and surprisingly improve the overall yield from 60-65% to greater than 90% as compared to the current conventional synthesis methods for amodiaquine and its analogs.

专利号:US-11566040-B2
优先权日:2019-01-28
标题:Synthesis of O-antigen oligosaccharide compounds of Helicobacter pylori serotype O2
发明人：YIN JIAN; HU JING; LIU ZHONGHUA; QIN CHUNJUN
权利人:UNIV JIANGNAN
摘要:Disclosed is synthesis of an O-Antigen oligosaccharide compound of Helicobacter pylori serotype O2, belonging to the field of organic synthesis. The disclosure obtains O-antigen disaccharide to tetracosasaccharide of Helicobacter pylori serotype O 2 by chemical synthesis. A chemical synthesis method which is quite conducive to production of a glucose-α-lglucosidic bond is developed in the disclosure by a protectant strategy, temperature effect, solvent effect, and additive effect. The method is applied in synthesis of an O-antigen oligosaccharide compound of Helicobacter pylori serotype O2 assembled with an amino linking arm. A saccharide conjugate can be prepared from the synthesized O-antigen oligosaccharide compound of Helicobacter pylori serotype O2 assembled with an amino linking arm together with a carrier protein for immunology researches, playing an important role in preventing and treating Helicobacter pylori.

专利号:US-2015105479-A1
优先权日:2012-04-24
标 题:Catalytically active body for the synthesis of dimethyl ether from synthesis gas
发明人：SCHÄFER ALEXANDER; FEYEN MATHIAS; PARVULESCU ANDREI-NICOLAE; Müller Ulrich; SCHAACK BERND BASTIAN
权利人:BASF SE
摘要:The invention relates to a catalytically active body for the synthesis of dimethyl ether from synthesis gas. In particular, the invention relates to an improved catalytically active body for the synthesis of dimethyl ether, whereby the components of the active body comprise a methanol active component and an acid component comprising a zeolitic material being crystallized by means of one or more alkenyltrialkylammonium cation R 1 R 2 R 3 R 4 N + -containing compounds as structure directing agent. Furthermore, the present invention concerns a method for the preparation of a catalytically active body, the use of the catalytically active body and a method for the preparation of dimethyl ether from synthesis gas.