CAS: 502-61-4; (3E,6E)-3,7,11-Trimethyldodeca-1,3,6,10-Tetraene

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CAS号40716-66-3 反式-橙花叔醇 | CAS号106-28-5 金合欢醇 | CAS号6138-90-5 香叶基溴 | CAS号170238-66-1 1-(Diphenylphos... | CAS号18794-84-8 (E)-β-金合欢烯 | CAS号689-97-4 乙烯基乙炔 | CAS号75-24-1 三甲基铝 | CAS号5389-87-7 香叶基氯 | CAS号3891-98-3 2,6,10-三甲基十二烷 | CAS号28977-59-5 4,8-dimethyldec... | CAS号110-93-0 甲基庚烯酮 | CAS号626-96-0 4-戊酮醛 | CAS号67-64-1 丙酮

3-甲基-2,5-二氢噻吩-1,1-二氧化物置于n,N-二甲基丙烯基脲,正丁基锂体系中,用 四氢呋喃,正己烷,甲苯 作为反应溶剂,化学反应 4.83H,反应生成 3,7,11-三甲基-1,3,6,10-十二碳-四烯
参考文献:Electones A 和 B 的仿生全合成以及 Hyperelodione D 的结构修改
标题:Electones A 和 B 的仿生全合成以及 Hyperelodione D 的结构修改
摘要:对 Hyperelodione D 生物合成的化学推测通过简明的全合成导致其结构重新分配.关键步骤是e,E-α-法呢烯和天然醌之间的仿生狄尔斯-阿尔德级联反应,产生三个环和六个立构中心.
DOI:10.1002/anie.202200420

专利信息

专利号:US-11046978-B2
优先权日:2016-03-16
标 题:Synthesis of isoprenoids and derivatives
发明人：GONZALEZ RAMON; CLOMBURG JAMES M; CHEONG SEOKJUNG
权利人:UNIV RICE WILLIAM M
摘要:This disclosure generally relates to the use of enzyme combinations or recombinant microbes comprising same to make isoprenoid precursors, isoprenoids and derivatives thereof including prenylated aromatic compounds. Novel metabolic pathways exploiting Claisen, aldol, and acyioin condensations are used instead of the natural mevalonate (MVA) pathway or 1-deoxy-d-xylulose 5-phosphate (DXP) pathways for generating isoprenoid precursors such as isopentenyl pyrophosphate (IPP), dimethylallyl pyrophosphate (DMAPP), and geranyl pyrophosphate (GPP). These pathways have the potential for better carbon and or energy efficiency than native pathways. Both decarboxylative and non-carboxylative condensations are utilized, enabling product synthesis from a number of different starting compounds. These condensation reactions serve as a platform for the synthesis of isoprenoid precursors when utilized in combination with a variety of metabolic pathways and enzymes for carbon rearrangement and the addition/removal of functional groups. Isoprenoid alcohols are key intermediary products for the production of isoprenoid precursors in these novel synthetic metabolic pathways.

专利号:WO-2024042405-A1
优先权日:2022-08-26
标 题:Compositions and methods for the synthesis of bio-based polymers
发明人：OLIVEIRA ANA; CAPÊTO ANA PAULA; PINTADO MANUELA
权利人:AMYRIS BIO PRODUCTS PORTUGAL UNIPESSOAL LTDA; UNIV CATOLICA PORTUGUESA
摘要:The present disclosure provides compositions and methods for the synthesis of bio-based polymers (e.g., polyurethanes and polyesters) from secondary materials produced during a fermentation process. The disclosure also features intermediates produced during these processes, as well as compositions containing the same.

专利号:US-11306157-B2
优先权日:2018-12-21
标 题:Expedient synthesis of core disaccharide building blocks from natural polysaccharides for heparan sulfate oligosaccharide assembly
发明人：HSIEH-WILSON LINDA C; PAWAR NITIN J; WANG LEI
权利人:CALIFORNIA INST OF TECHN
摘要:Methods for the preparation of oligosaccharide products from polysaccharide starting materials are disclosed. The methods include: hydrolyzing a glucosamine-containing polysaccharide starting material, such as heparin or heparosan, under conditions sufficient to form an oligosaccharide intermediate (e.g., a GlcN-IdoA disaccharide intermediate or a GlcA-GlcN disaccharide intermediate), and converting the oligosaccharide intermediate to the oligosaccharide product. Conversion of the oligosaccharide intermediates to the oligosaccharide products may include one or more esterification, acylation, epimerization, protection, and deprotection steps. Preparation of higher-order oligomers is described, as well as methods for selective oligosaccharide sulfation.

专利号:WO-2024130393-A1
优先权日:2022-12-21
标 题 :Nanoparticle and method of synthesis thereof
发明人：MOSKOVCHENKO SVITLANA
权利人:MOSKOVCHENKO SVITLANA
摘要:The present technology relates to nanoparticles, compositions comprising said nanoparticles, and methods of synthesis of said nanoparticles; wherein the nanoparticles comprise a metal nanoparticle core, a first coating of amphiphilic molecules, and a second coating of essential oil, essential oil primary constituent, or both, which combine the antimicrobial properties of metal nanoparticles, amphiphilic molecules, and essential oil or essential oil primary constituents.

专利号:US-2023250208-A1
优先权日:2019-12-20
标 题:Synthesis of isoprene-butadiene copolymer rubbers
发明人：SPILKER THOMAS FRANKLIN
权利人:GOODYEAR TIRE & RUBBER
摘要:It has been unexpectedly found that certain neodymium catalyst systems can be used to copolymerize isoprene and 1,3-butadiene to produce random isoprene-butadiene copolymer rubbers which are not tapered. These random isoprene-butadiene copolymer rubbers have properties which are beneficial for use in rubber formulations for manufacturing a wide variety of rubber products, such as tires, hoses, conveyor belts, power transmission belts, and shoe soles. These random isoprene-butadiene rubbers are synthesized by copolymerizing (a) isoprene monomer or a substituted isoprene monomer and (b) 1,3-butadiene monomer in the presence of a neodymium catalyst system, wherein the neodymium catalyst system is prepared by (1) reacting a neodymium carboxylate with an organoaluminum compound in the presence of a conjugated diolefin monomer to produce neodymium-aluminum catalyst component, and (2) subsequently reacting the neodymium-aluminum catalyst component with an alkyl aluminum chloride to produce the neodymium catalyst system.

专利号:US-11597790-B2
优先权日:2019-12-20
标 题 :Synthesis of isoprene-butadiene copolymer rubbers
发明人：SPILKER THOMAS FRANKLIN
权利人:GOODYEAR TIRE & RUBBER
摘要:It has been unexpectedly found that certain neodymium catalyst systems can be used to copolymerize isoprene and 1,3-butadiene to produce random isoprene-butadiene copolymer rubbers which are not tapered. These random isoprene-butadiene copolymer rubbers have properties which are beneficial for use in rubber formulations for manufacturing a wide variety of rubber products, such as tires, hoses, conveyor belts, power transmission belts, and shoe soles. These random isoprene-butadiene rubbers are synthesized by copolymerizing (a) isoprene monomer or a substituted isoprene monomer and (b) 1,3-butadiene monomer in the presence of a neodymium catalyst system, wherein the neodymium catalyst system is prepared by (1) reacting a neodymium carboxylate with an organoaluminum compound in the presence of a conjugated diolefin monomer to produce neodymium-aluminum catalyst component, and (2) subsequently reacting the neodymium-aluminum catalyst component with an alkyl aluminum chloride to produce the neodymium catalyst system.