CAS: 144-55-8; Sodium Bicarbonate

上下游产品

1,3,5-trichloro-2,4,6-triazine (1-carbamoylmethyl-cyclohexylmethyl)-carbamic acid tert-butyl ester 5-[N-tert-butoxycarbonyl-N-[5-(trifluoromethanesulfonamido)pentan-1-yl]aminomethyl]-imidazo[1,2-a]pyridine trifluoroacetyl chloride(+/-)-cis-4-methyl-5-phenyloxazolidin-2-one 4,6-bis-dimethylamino-[1,3,5]oxadiazin-2-one NSC 347503 -2-oxazolidinone3-2-hydroxy-3-(2-nitro-1H-imidazol-1-yl)propyl-2-oxazolidinone

Sodium Oxalate 以 水 用作溶剂,化学反应生成碳酸氢钠
参考文献:Scholder,R.; Linstroem,C. F.,Berichte Der Deutschen Chemischen Gesellschaft,1930,Vol. 63,P. 2730-2737
标题:Scholder,R.; Linstroem,C. F.,Berichte Der Deutschen Chemischen Gesellschaft,1930,Vol. 63,P. 2730-2737

专利信息

专利号:US-2025313590-A1
优先权日:2024-03-16
标题:Phosphoramidite morpholino monomers towards synthesis/convergent synthesis of PMO, TMO, their chimera oligos in 5 prime to 3 prime direction
发明人：SINHA SURAJIT; GHOSH ATANU; BANERJEE ARPAN
权利人:INDIAN ASS FOR THE CULTIVATION OF SCIENCE
摘要:The present invention relates to 5′-morpholino amidite monomers as 5′-CE/5′- t Bu phosphoramidite morpholino monomers (2) and process chemistry for the efficient synthesis of N-Trityl or monomethoxytrityl (MMTr)-protected 5′-morpholino amidite monomers and their use in the synthesis of phosphorodiamidate morpholino oligonucleotides (PMO), thiophosphoramidate morpholino oligonucleotides (TMO) and their chimeras which can be used for antisense technology or in general oligonucleotides related research.

专利号:US-10010875-B2
优先权日:2014-10-30
标题 :Method for preparing copper-zinc-based catalyst used in synthesis of methanol through CO2 hydrogenation
发明人：YU YANG; HAO AIXIANG; CHEN HAIBO; WEI SHIXIN; YIN YUSHENG; XIE TIANMING; HE JIAN; MAO CHUNPENG; TAN JIEDONG
权利人:CHINA PETROLEUM & CHEM CORP; RES INSTITUTE OF NANJING CHEMICAL INDUSTRY GR; RES INST NANJING CHEMICAL IND GROUP
摘要:Disclosed is a method for preparing a copper-zinc-based catalyst used in synthesis of methanol through CO 2 hydrogenation, and ultrasonic waves are used for control over crystalline phase's composition of a catalyst precursor. Further related to is a catalyst prepared by such a method. An amount of aurichalcite in an active catalyst precursor can be improved through the method, and the specific surface area of the metal copper in a reduced state catalyst is high. The catalyst presents high activity and hydrothermal stability, and promotes high space time yield of methanol in the synthesis of methanol through CO 2 hydrogenation.

专利号:US-11236029-B2
优先权日:2019-05-17
标题 :Synthesis of a triangulene ring system and derivatives thereof
发明人：JOHNSON RICHARD PETER; HOLT CARTER J
权利人:THE UNIV OF NEW HAMPSHIRE; UNIV NEW HAMPSHIRE
摘要:A three step synthesis of the 8,12-dihydro-4H-dibenzo[cd,mn]pyren-3a 2 -ylium cation (triangulenium cation) is effected by cascade cyclization of a tetra-benzyl alcohol precursor in triflic acid solution. This cation is easily observed by NMR and optical spectroscopy. Quenching of the cation into basic solutions or by hydride transfer from triethylsilane provides access to stable dihydro and tetrahydro[3]triangulenes. This route makes several [3]triangulene precursors more readily available for development of new applications in the field of molecular electronics.

专利号:WO-2020253243-A1
优先权日:2019-06-20
标题:Process method for catalyzed synthesis of lactide with alkali metal compound
发明人：JIANG WEI; ZHANG YANKAI; SUN PING; LI AIMIN; CHEN JINLONG; ZHANG QUANXING
权利人:NANJING UNIVERSITY OF TECHNOLOGY; NANJING QUANKAI RES INSTITUTE OF BIOMATERIALS CO LTD
摘要:The present invention provides a process method for catalyzed synthesis of lactide with an alkali metal compound, comprising: mixing an alkali metal compound with a lactic acid oligomer, and carrying out a cracking reaction to obtain lactide by means of vacuum distillation, wherein the alkali metal compound used is one or a plurality of an alkali metal carbonate, an alkali metal bicarbonate, and an alkali metal hydroxide. Compared with the prior art, the advantages of the present invention is that the alkali metal compound reacts and dissolves quickly after being added to the system avoiding the problem of pipeline blocking due to a catalyst not dissolving, the alkali metal compound used is cheap and readily available, the amount of the catalyst used is small, the yield of the reaction product lactide is greater than 80%, and the reaction is rapid and easy to industrialize.

专利号:WO-2020253244-A1
优先权日:2019-06-20
标 题 :Process for catalytic synthesis of lactide
发明人：JIANG WEI; ZHANG YANKAI; SUN PING; LI AIMIN; ZHANG QUANXING
权利人:NANJING UNIVERSITY OF TECHNOLOGY; NANJING QUANKAI RES INSTITUTE OF BIOMATERIALS CO LTD
摘要:The present invention provides a process for the catalytic synthesis of lactide, comprising: mixing a lactic acid oligomer with a composite catalyst; and synthesizing lactide under a heating condition, and collecting the product using a vacuum distillation mode. The used composite catalyst is composed of a zinc or tin compound and an alkali metal compound. Compared with the prior art, the advantages of the present invention are that: the used composite catalyst features a high production rate with a small use amount, a low reaction temperature (150-220°C), and a short reaction time (2-5 h), has a single pass yield that may reach 95% or more, reduces energy consumption compared with the prior art, and facilitates industrial implementations.

专利号:EP-4092127-A1
优先权日:2021-05-18
标题:Enzyme-catalytic method for the direct stereoselective synthesis of gamma-(acyloxy) carboxylic acids
发明人：PARVE JAAN; KUDRJASHOVA MARINA; GATHERGOOD NICHOLAS; PARVE OMAR
权利人:TALLINN UNIV OF TECHNOLOGY
摘要:The present invention is a method for the stereoselective straightforward synthesis of gamma-acyloxy carboxylic acids of novel structure starting from racemic gamma-hydroxy carboxylic acid salts that are obtained by alkaline hydrolysis of the racemic gamma-lactones. The salt is acylated by enzyme catalysis in an organic solvent containing an acyl donor and an immobilised lipase, on stirring at room temperature (ca 20 °C) until reaching the conversion rate required. After that, the reaction mixture is acidified and extracted and the product treated with catalytic amount of para-toluenesulfonic acid in toluene during the time required for the relactonisation of the unreacted salt enantiomer. Thereafter, the target gamma-acyloxy carboxylic acid formed from one enantiomer of the starting compound and relactonised gamma-lactone formed from the other, unreacted enantiomer of the starting compound are isolated using a routine separation method, such as distillation, extraction with NaHCO3 water solution followed by acidification or column chromatography.