CAS: 535-13-7; Ethyl 2-Chloropropionate

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CAS号97-64-3 乳酸乙酯 | CAS号64-17-5 乙醇 | CAS号598-78-7 2-氯丙酸 | CAS号687-47-8 (-)-乳酸乙酯 | CAS号535-11-5 2-溴丙酸乙酯 | CAS号98-88-4 苯甲酰氯 | CAS号105-37-3 丙酸乙酯 | CAS号128-09-6 N-氯代丁二酰亚胺 | CAS号142-04-1 苯胺盐酸盐 | CAS号628-13-7 吡啶盐酸盐 | CAS号4726-84-5 2-氨基丙酰胺 | CAS号18671-89-1 ethyl 2-(4-chlo... | CAS号21326-62-5 3-CHLORO-2-METH... | CAS号302-72-7 DL-2-氨基丙酸 | CAS号24752-66-7 N-benzyl-2-chlo... | CAS号28578-16-7 甲基胡椒基环氧丙酸乙酯 | CAS号809279-05-8 2-(乙基磺酰基)丙酸 | CAS号27816-36-0 2-氯丙酰胺 | CAS号97-64-3 乳酸乙酯 | CAS号109-94-4 甲酸乙酯

Alkaline Earth Salt Of/the/ Methylsulfuric Acid置于亚磷酸三苯酯,氯体系中,化学反应生成 2-氯丙酸乙酯
参考文献:Coe Et Al.,Journal Of The Chemical Society,1954,P. 2281,2285
标题:Coe Et Al.,Journal Of The Chemical Society,1954,P. 2281,2285

专利信息

专利号:US-11938187-B2
优先权日:2021-06-10
标题:Methods and compositions for synthesis of two-photon cleavable phosphoramidite molecules for oligonucleotide conjugation
发明人：LO PEGGY PIK KWAN; LIU LING SUM; TAM DICK YAN
权利人:UNIV CITY HONG KONG
摘要:The syntheses of two phosphoramidite building blocks based on BNSF and BNSMB structures are disclosed. Furthermore, some common molecular intermediates have been designed and linked to the central biphenyl core of the two molecules, resulting in a versatile and cost-effective design. These compounds can be effectively introduced to DNA oligonucleotides via the well-established standard cyanoethylphosphoramidite chemistry on the nucleic acid synthesizer. Fragmentation of these BNSF- and BNSMB-functionalized DNA strands is achieved by both one-photon and two-photon photolysis of photoliable bonds of [2-(2-nitrophenyl)propoxy]carbonyl groups on BNSF and BNSMB molecules respectively, resulting in two short pieces of single-stranded DNAs. The versatile design and facile synthesis of these two-photon photocleavage phosphoramidite molecules are beneficial to synthetic chemists and photochemists for the development of new caged compounds which enables to introduce into oligonucleotides as light-triggered carriers via solid-phase synthesis for a wide range of applications in materials science, polymer, chemistry, biology and DNA nanoecthnology.

专利号:US-12351558-B2
优先权日:2020-04-17
标题 :Process for the synthesis of lofexidine
发明人：NG CHOI I-TENG MONTSERRAT
权利人:MEDICHEM SA
摘要:The present invention relates to an improved process for the synthesis of lofexidine, or a pharmaceutically acceptable salt thereof, using an aluminium alkoxide as Lewis acid.

专利号:US-6610802-B2
优先权日:2001-05-29
标题 :Process for synthesis of polymer compositions, polymer compositionS obtainable by the process, and use of the same
发明人：ROOS SEBASTIAN; EISENBERG BORIS; HARPE CAROLIN
权利人:ROHMAX ADDITIVES GMBH
摘要:The present invention relates to a process for synthesis of polymer compositions with reduced catalyst content, wherein ethylenically unsaturated monomers containing less than 0.5 wt % of ethylenically unsaturated monomers with at least one carboxylic group, sulfonic acid group and/or at least one phosphonic acid group relative to the total weight of the ethylenically unsaturated monomers are polymerized by means of initiators containing a transferable group of atoms and of one or more catalysts comprising at least one transition metal in the presence of ligands which can form a coordination compound with the metal catalyst or catalysts and, after the polymerization, the catalyst contained in the polymer is at least partly separated. For this purpose, the polymer composition is filtered, after the polymerization, in the presence of at least one filter aid which contains at least 0.5 wt %, relative to the total weight of the filter aid, of repeating units that contain at least one carboxylic acid group, sulfonic acid group and/or at least one phosphonic acid group.

专利号:US-11459303-B2
优先权日:2019-06-21
标题 :Process for the synthesis of lofexidine
发明人：DONNOLA MONICA; BAROZZA ALESSANDRO; ROLETTO JACOPO; PAISSONI PAOLO
权利人:PROCOS SPA
摘要:Disclosed is a process for the synthesis of lofexidine of formula (I) and the hydrochloride salt thereof (II), from ethyl 2-(2,6-dichlorophenoxy)propionate (III) and ethylenediamine in the presence of tetravalent titanium alkoxides, preferably titanium isopropoxide, in an apolar solvent such as toluene. A further object of the present invention is a process for the preparation of the intermediate ethyl 2-(2,6-dichlorophenoxy)propionate (III) from 2,6-dichlorophenol and ethyl 2-chloropropionate in the presence of a polar aprotic solvent and an alkali or alkaline earth carbonate salt, preferably potassium carbonate. Both processes are more cost-effective and more easily industrially scalable than the known procedures, thus enabling the active ingredient to be obtained with high yields at a limited cost.

专利号:US-6610801-B1
优先权日:2000-11-13
标题:Processes for synthesis of polymer compositions
发明人：SCHERER MARKUS
权利人:ROHMAX ADDITIVES GMBH
摘要:The present invention relates to processes for synthesis of poly(meth)acrylate compositions, wherein ethylenically unsaturated monomers are transformed to polymers by means of initiators containing a transferable group of atoms and of one or more catalysts comprising at least one transition metal in the presence of ligands which can form a coordination compound with the metal catalyst or catalysts, wherein ethylenically unsaturated monomers containing 50 to 100 wt %, relative to the total weight of ethylenically unsaturated monomers, of (meth)acrylates of formula (I) are polymerizedwherein R denotes hydrogen or methyl, R1 denotes a straight-chain or branched alkyl group with 8 to 40, carbon atoms, R2 and R3 independently denote hydrogen or a group of the formula -COOR1, wherein R' denotes hydrogen or a straight-chain or branched alkyl group with 8 to 40, carbon atoms, in the presence of copper, the total concentration of copper of oxidation numbers (I) and (II) in the polymerization composition being <=200 ppm relative to the total weight of the composition.

专利号:US-6639029-B1
优先权日:2000-11-13
标 题 :Process for continuous synthesis of polymer compositions as well as use of same
发明人：SCHERER MARKUS; BOLLINGER JOSEPH MARTIN; COOPER JR DAVID J; TILLERY LARRY STEPHEN; WOODRUFF ROBERT
权利人:ROHMAX ADDITIVES GMBH
摘要:The present invention relates to a process for synthesis of polymer compositions, wherein ethylenically unsaturated monomers are polymerized by means of initiators containing a transferable atom or group of atoms and of one or more catalysts comprising at least one transition metal in the presence of ligands which can form a coordination compound with the metal catalyst or catalysts, the process being characterized in that the polymerization takes place by means of continuous process operation.