CAS: 642-71-7; 3,4,5-Trimethoxyphenol

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CAS号86-81-7 3,4,5-三甲氧基苯甲醛 | CAS号24313-88-0 3,4,5-三甲氧基苯胺 | CAS号530-55-2 2,6-二甲氧基-1,4-苯醌 | CAS号143287-98-3 (3,4,5-trimetho... | CAS号378236-91-0 2-(3,4,5-trimet... | CAS号378236-90-9 4-(3,4,5-trimet... | CAS号491-67-8 黄芩素； 黄芩苷元 | CAS号480-11-5 千层纸素A | CAS号204979-20-4 5-(3-bromopropo... | CAS号22248-14-2 2,3,4-三甲氧基-6-羟基苯乙酮 | CAS号973-67-1 5,6,7-三甲氧基黄酮 | CAS号632-85-9 汉黄芩素 | CAS号530-55-2 2,6-二甲氧基-1,4-苯醌 | CAS号5333-45-9 1,2,3,5-四甲氧基苯 | CAS号634-36-6 1,2,3-三甲氧基苯 | CAS号529-53-3 野黄芩素

2-(3,4,5-Trimethoxyphenyl)Propan-2-Ol置于sodium Perborate,三氟化硼乙醚体系中,用 四氢呋喃 作为反应溶剂,化学反应生成 3,4,5-三甲氧基苯酚
参考文献:沿线性多芳香族链调节极化,以合理诱导硝酸镧系元素络合物的同构.
标题:沿线性多芳香族链调节极化,以合理诱导硝酸镧系元素络合物的同构.
摘要:棒状配体l 4C12(苯并咪唑-Ooc-苯基)和l 5C12(苯并咪唑-Coo-苯基)中酯间隔基的相反取向会极大地改变芳族体系的电子结构,而不会影响其经向三价配位的三价镧系元素ln (iii),以及它们的热致液晶(即,同晶)行为.但是,尽管[ln(l 5C12)(no3)3]具有重叠的分子结构和可比的光物理性质,但它们由[ln(l 4C12)(no3)3](ln = La-Lu)络合物表现出的丰富的同质性消失了.在气相中进行的密度泛函理论(dft)和随时间变化的dft计算表明,酯间隔基的倒置对沿链的芳族基团的电子结构和极化有很大影响,控制残余分子间的相互作用导致热致液晶相的形成.根据经验,贫电子和富电子芳环的交替有利于刚性核之间的分子间相互作用,因此有利于同构,这是l 4C12,L 5C12,[ln(l 4C12)(no3)3]遇到的情况,但不适用于[ln(l 5C12)(no3)3].从[ln(l
DOI:10.1002/chem.200601389

专利信息

专利号:US-11866398-B2
优先权日:2018-05-15
标 题:Total synthesis of prostaglandin J natural products by stereoretentive metathesis
发明人：LI JIAMING; CHEN XU; AHMED TONIA S; STOLTZ BRIAN M; GRUBBS ROBERT H
权利人:CALIFORNIA INST OF TECHN
摘要:This invention relates generally to the synthesis of Δ12-Prostaglandin J product using stereoretentive ruthenium olefin metathesis catalysts supported by dithiolate ligands. Δ12-Prostaglandin J products were generated with excellent selectivity (>99% Z) and in moderate to high/good yields (47% to 80% yield; 58% to 80% yield).

专利号:US-8569560-B2
优先权日:2006-10-13
标题 :Synthesis of terminal alkenes from internal alkenes via olefin metathesis
发明人：SCHRODI YANN; PEDERSON RICHARD L; KAIDO HIROKI; TUPY MICHAEL J
权利人:ELEVANCE RENEWABLE SCIENCES
摘要:This disclosure relates generally to olefin metathesis, and more particularly relates to the synthesis of terminal alkenes from internal alkenes using a cross-metathesis reaction catalyzed by an olefin metathesis catalyst. According to one aspect, for example, a method is provided for synthesizing a terminal olefin, the method comprising contacting, in the presence of a ruthenium alkylidene metathesis catalyst, an olefinic substrate comprised of at least one internal olefin with a cross metathesis partner comprised of an alpha olefinic reactant, under reaction conditions effective to allow cross-metathesis to occur, wherein the reaction conditions include a reaction temperature of at least 35° C. The methods, compositions, reactions and reaction systems herein disclosed have utility in the fields of catalysis, organic synthesis, and industrial chemistry.

专利号:US-2018265547-A1
优先权日:2014-07-18
标 题 :Z-selective olefin metathesis of peptides
发明人：MANGOLD SHANE L; GRUBBS ROBERT H
权利人:CALIFORNIA INST OF TECHN
摘要:The invention relates generally to the synthesis of modified amino acids and modified peptides in the presence of cyclometalated catalysts. The invention has utility in the fields of catalysis, organic synthesis, polymer chemistry, and industrial and fine chemicals chemistry.

专利号:WO-2020032913-A1
优先权日:2018-08-04
标题:Process for synthesis of oroxylin a
发明人：MAJEED MUHAMMED; NAGABHUSHANAM KALYANAM; RAMANUJAM RAJENDRAN; HEMANTHA HOSAHALLI
权利人:MAJEED MUHAMMED; NAGABHUSHANAM KALYANAM; RAMANUJAM RAJENDRAN; HEMANTHA HOSAHALLI PRABHAKARA
摘要:Disclosed is a novel, simple, scalable and environment friendly process for the synthesis of Oroxylin A from Baicalin. Baicalm is esterified to obtain a methyl ester which is further selectively methylated to provide Oroxylin A gluciironide methyl ester which on de- glycosylation results in the formation of Oroxylin A.

专利号:US-11407726-B2
优先权日:2017-12-06
标 题:Using stereoretention for the stereoselective formation of e-macrocycles with Ru-based olefin metathesis catalysts
发明人：AHMED TONIA S; MONTGOMERY T PATRICK; GRUBBS ROBERT H
权利人:CALIFORNIA INST OF TECHN
摘要:This invention relates generally to the synthesis of E-macrocycles using stereoretentive ruthenium olefin metathesis catalysts supported by dithioiate ligands. Macrocycles were generated with excellent selectivity (>99% E) and in moderate to high/good yields (47% to 80% yield; 58% to 80% yield) from diene starting materials bearing two E-olefins or bearing one E-olefin and one terminal olefin, A variety of rings were constructed, ranging from 12- to 18-membered macrocycles, including the antibiotic recifeiolide. The invention has utility in the fields of organometallics and organic synthesis.

专利号:US-10407401-B1
优先权日:2018-08-04
标题 :Process for synthesis of Oroxylin A
发明人：MAJEED MUHAMMED; NAGABHUSHANAM KALYANAM; RAMANUJAM RAJENDRAN; HEMANTHA HOSAHALLI PRABHAKARA
权利人:MAJEED MUHAMMED; NAGABHUSHANAM KALYANAM; RAMANUJAM RAJENDRAN; HEMANTHA HOSAHALLI PRABHAKARA; SAMI LABS LTD
摘要:Disclosed is a novel, simple, scalable and environment friendly process for the synthesis of Oroxylin A from Baicalin. Baicalin is esterified to obtain a methyl ester which is further selectively methylated to provide Oroxylin A glucuronide methyl ester which on de-glycosylation results in the formation of Oroxylin A.