CAS: 610-99-1; 2'-Hydroxypropiophenone

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CAS号637-27-4 丙酸苯酯 | CAS号93-55-0 苯丙酮 | CAS号1481-93-2 4-二乙酰醇 | CAS号491-38-3 乙色唑 | CAS号1745-81-9 2-烯丙基酚 | CAS号1481-84-1 2-hydroxy-α-eth... | CAS号875-54-7 6-[1-(methylami... | CAS号108-95-2 苯酚 | CAS号607-90-9 水杨酸丙酯 | CAS号82222-76-2 2-(1-hydroxy-2-... | CAS号69-72-7 水杨酸 | CAS号142819-94-1 1-[2-(Allyloxy)... | CAS号1939-72-6 2'-(2,3-Dihydro... | CAS号18265-75-3 1-(2-羟基苯基)-1-丙酮肟 | CAS号120-80-9 邻苯二酚 | CAS号288-32-4 咪唑

苯丙酮置于[ruthenium(II)(η6-1-Methyl-4-Isopropyl-Benzene)(Chloride)(μ-Chloride)]2,Selectfluor,三氟乙酸,三氟乙酸酐体系中,化学反应 11.0H,以54%的收率获得产物2'-羟基苯丙酮
参考文献:拓宽区域和化学选择性c-h氧合的催化剂和反应范围:通过吸引rh(II)和ru(II)催化,一种方便且可扩展的2-酰基苯酚方法†
标题:拓宽区域和化学选择性c-h氧合的催化剂和反应范围:通过吸引rh(II)和ru(II)催化,一种方便且可扩展的2-酰基苯酚方法†
摘要:已开发出一种独特的rh(II)和ru(II)催化的芳基酮和其他芳烃的ch氧化反应,可以轻松合成各种功能化的酚.该反应显示出优异的反应性,区域和化学选择性,非常好的官能团相容性和高产率.该方法的实用性已通过克级合成几种不同的2-酰基酚得到了证明.它的效用已在杂环合成和药物的直接修饰中的进一步应用中得到很好的例证非诺贝特.
DOI:10.1039/c3Ob27457H

专利信息

专利号:US-5502126-A
优先权日:1993-06-17
标 题 :Process for the synthesis of isoprene butadiene rubber
发明人：BELL ANTHONY J; MATRANA BARRY A; HALASA ADEL F
权利人:GOODYEAR TIRE & RUBBER
摘要:The subject invention relates to a technique for synthesizing rubbery non-tapered, random, copolymers of 1,3-butadiene and isoprene. These rubbery copolymers exhibit an excellent combination of properties for utilization in tire sidewall rubber compounds for truck tires. By utilizing these isoprene-butadiene rubbers in tire sidewalls, tires having improved cut growth resistance can be built without sacrificing rolling resistance. Such rubbers can also be employed in tire tread compounds to improve tread wear characteristics and decrease rolling resistance without sacrificing traction characteristics. This invention more specifically discloses a process for the synthesis of isoprene-butadiene rubbers which comprises copolymerizing isoprene monomer and 1,3-butadiene monomer in an organic solvent in the presence of a catalyst system which is made by the sequential steps of (1) mixing (a) an organoaluminum hydride, (b) a member selected from the group consisting of aliphatic alcohols, cycloaliphatic alcohols, aliphatic thiols, cycloaliphatic thiols, trialkyl silanols, and triaryl silanols, and (c) optionally, 1,3-butadiene in an organic solvent to produce a modified organoaluminum catalyst component; (2) adding an organometallic compound which contains a metal from Group III-B of the Periodic System to the modified organoaluminum catalyst component to produce a Group III-B metal containing catalyst component; and (3) adding a compound which contains at least one labile halogen atom to the Group III-B metal containing catalyst component.

专利号:US-2009259055-A1
优先权日:2008-02-29
标题:Catalytic enantioselective synthesis of flavanones and chromanones

专利号:US-9226876-B2
优先权日:2001-10-19
标 题:Rubber for baby bottle nipples, pacifiers, and syringe plungers
发明人：KERNS MICHAEL LESTER; RACHITA MICHAEL JOSEPH
权利人:KERNS MICHAEL LESTER; RACHITA MICHAEL JOSEPH; GOODYEAR TIRE & RUBBER
摘要:The production of a protein free synthetic polyisoprene which has both low levels of chemical impurities and good physical properties has yet to be realized. It has now been envisioned that the use of neodymium catalyzed polyisoprene will offer the combined advantages of both a clean, as well as, high cis-1,4 polymer. Synthesis of polyisoprene rubber using a neodymium based catalyst system is described. Characterization of the material shows the absence of an ultra high molecular weight fraction and the presence of very high cis-1,4-microstructure. Gum stock and black filled compound studies comparing neodymium polyisoprene with natural rubber, titanium polyisoprene, and lithium polyisoprene have been performed. Results indicate that polyisoprene rubber synthesized using a neodymium catalyst system (Nd—PI) has similar stress-strain and tear properties as synthetic titanium polyisoprene. Analysis of residual volatile, extractable, and oligomer levels indicates Nd—PI is indeed a clean source of high cis synthetic polyisoprene. In the practice of this invention such Nd—PI is used in manufacturing articles used in manufacturing health care products, garments, clothing, and food and beverage packaging. Some specific applications include: bandages, drug delivery patches, suture tape, pharmaceutical closures, including syringe plungers and sleeves, vial closures and stoppers, tourniquets, exercise bands, condoms and prophylactic devices, gloves and glove dip, intervenous bags and tubing, baby bottle nipples, pacifiers, and teething devices, breast hoods, and dental and orthodontic devices.

专利号:US-6004789-A
优先权日:1995-05-26
标题 :Process for obtaining acyloins, pyruvate decarboxylases suitable therefor and their production and DNA sequence of the PDC gene coding them
发明人：BRUHN HEIKE; POHL MARTINA; MESCH KARIN; KULA MARIA-REGINA
权利人:FORSCHUNGSZENTRUM JUELICH GMBH
摘要:A process for obtaining a pyruvate decarboxylase by isolation from a producer organism. The pyruvate decarboxylase is capable of forming (R)-(-)-phenylacetylcarbinole (I) in ≧95% enantiomer unit with a product ratio of (I) to 2-hydoxypropiophenone of ≧95%. In addition, the pyruvate decarboxylase has a specific activity with regard to phenylacetylcarbinole formation of >1U/mg. It is the aim of the invention to obtain a pyruvate decarboxylase with improved synthesis capacity concerning the formation of (R)-(-)-phenylacetylcarbinole. The process of the invention developed for this purpose is characterized in that use is made of a producing organism with a gene coding for pyruvate decarboxylase from Zymomonas mobilis, in the DNA sequence of which the tryptophane radical coding codon TGG is replaced at position 1174-1176 by a codon which codes for an amino acid radical with a reduced volume ratio.

专利号:US-7851640-B2
优先权日:2008-02-29
标 题 :Catalytic enantioselective synthesis of flavanones and chromanones
发明人：SCHEIDT KARL; BIDDLE MARGARET MARIE
权利人:UNIV NORTHWESTERN
摘要:Various chromanone, flavanone and abyssinone compounds as can be prepared enantioselectively using a chiral thiourea catalyst.

专利号:WO-03077902-A1
优先权日:2002-02-19
标 题 :Methods for synthesis of prodrugs from 1-acyl-alkyl derivatives and compositions thereof