CAS: 50-78-2; Acetylsalicylic Acid

上下游产品

CAS号533-18-6 乙酸邻甲苯酯 | CAS号108-24-7 乙酸酐 | CAS号69-72-7 水杨酸 | CAS号64-19-7 冰醋酸 | CAS号90-02-8 水杨醛 | CAS号302353-24-8 methylene-benzo... | CAS号463-51-4 乙烯酮 | CAS号85515-88-4 2-(2-tosylhydra... | CAS号75-36-5 乙酰氯 | CAS号10523-48-5 4-羟基-2-氧代-2H-色烯-3-甲腈 | CAS号55482-89-8 呱西替柳 | CAS号81674-79-5 胍美柳 | CAS号529-68-0 乙酰基水杨酸乙酯 | CAS号19479-87-9 amino acetate | CAS号546-88-3 乙酰氧肟酸 | CAS号410071-22-6 [4-(chloromethy... | CAS号543-24-8 N-乙酰甘氨酸 | CAS号147249-33-0 Aspalatone | CAS号4143-74-2 4'-甲氧基黄酮

2-(2-甲苯磺酰肼-1-羰基)苯基乙酸酯置于copper Dichloride体系中,用 四氢呋喃,水 作为反应溶剂,化学反应 24.0H,以80%的收率获得产物阿司匹林
参考文献:Attanasi,Orazio; Filippone,Paolino; Serra-Zanetti,Franco,Synthetic Communications,1982,Vol. 12,# 14,P. 1155-1162
标题:Attanasi,Orazio; Filippone,Paolino; Serra-Zanetti,Franco,Synthetic Communications,1982,Vol. 12,# 14,P. 1155-1162

专利信息

专利号:US-2010099894-A1
优先权日:2006-10-09
标 题 :Method for the Synthesis of Cyclic Acetals by the Reactive Extraction of a Polyol in a Concentrated Solution
发明人：DUBOIS JEAN-LUC; IBORRA CHORNET SARA; VELTY ALEXANDRA I LUCIENNE; CORMA CANOS AVELINO
权利人:DUBOIS JEAN-LUC; IBORRA CHORNET SARA; VELTY ALEXANDRA I LUCIENNE; CORMA CANOS AVELINO
摘要:A method for the synthesis of cyclic acetals comprises reacting at least one carbonyl-function compound selected from aldehydes, ketones, and/or linear acetals, on a polyol in a concentrated aqueous solution exceeding 20 wt % in a reactor containing an acidic catalyst. The carbonyl-function compound is selected so that the cyclic acetal obtained has a water solubility lower than 20000 mg/kg. During the catalytic reaction for the cyclic acetal synthesis, at least one portion of the organic phase containing the cyclic acetal is separated. The acidic catalysis is either homogeneous when using a water-soluble strong acid, or heterogeneous when using a solid acid such as a resin, a zeolite, or any appropriately acidified solid. The extractive reaction method can be used for obtaining high conversions and selectivity.

专利号:US-9012625-B2
优先权日:2009-04-07
标 题 :Method for the synthesis of a trisaccharide
发明人：DÉKANY GYULA; Ã?GOSTON KÃ?ROLY; BAJZA ISTVAN; BOUTET JULIEN; BØJSTRUP MARIE; FANEFJORD METTE; PÉREZ FIGUEROA IGNACIO; HEDEROS MARKUS; HORVATH FERENC; KOVÃ?CS-PÉNZES PIROSKA; KRÖGER LARS; OLSSON JOHAN; RÖHRIG CHRISTOPH; SCHROVEN ANDREAS; VRASIDAS IOANNIS
权利人:DÉKANY GYULA; Ã?GOSTON KÃ?ROLY; BAJZA ISTVAN; BOUTET JULIEN; BØJSTRUP MARIE; FANEFJORD METTE; PÉREZ FIGUEROA IGNACIO; HEDEROS MARKUS; HORVATH FERENC; KOVÃ?CS-PÉNZES PIROSKA; KRÖGER LARS; OLSSON JOHAN; RÖHRIG CHRISTOPH; SCHROVEN ANDREAS; VRASIDAS IOANNIS; GLYCOM AS
摘要:The present invention relates to an improved synthesis of a trisaccharide of the formula (1), novel intermediates used in the synthesis and the preparation of the intermediates.

专利号:WO-2016056031-A1
优先权日:2014-10-08
标题:Novel diol compounds synthesis and its use for formal synthesis of (2r, 3 s)-3-hydroxypipecolic acid
发明人：CHAVAN SUBHASH PRATAPRAO; PAWAR KAILASH PRALHAD
权利人:COUNCIL SCIENT IND RES
摘要:The patent discloses novel diol derivatives of general formula I, [Formula should be inserted here] A chiral pool process for the synthesis of the compound of formula I from D glucose. Further, it discloses a process for the synthesis of (2 R , 3 S )-3-hydroxypipecolic acid from D- glucose using chiral pool approach, wherein the D-glucose used is in enantiomerically pure form.

专利号:WO-2004037772-A1
优先权日:2002-10-22
标 题 :Convenient and scalable synthesis of ethyl n-[(2-boc-amino) ethyl] glycinate and its hydrochloride salt
发明人：HUDSON ROBERT H E; VIIRRE RUSSELL D
权利人:UNIV WESTERN ONTARIO; HUDSON ROBERT H E; VIIRRE RUSSELL D
摘要:The present invention discloses an improved synthesis of ethyl N-[(2-Boc-amino)ethyl]glycinate and its hydrochloride salt. The synthesis is based on the reductive alkylation of Boc-ethylenediamine with ethyl glyoxylate hydrate and furnishes the title compound in near quantitative yield and high purity without chromatography. This compound is suitable, as is, for the synthesis peptide nucleic acid monomers. Further, conversion to the hydrochloride salt provides a stable, non-hygroscopic solid that is a convenient form for handling and storage.

专利号:US-5191087-A
优先权日:1991-07-24
标 题 :Process for the synthesis of 1,4-disubstituted pyrazoles
发明人：ALCARAZ JEAN-MARIE; LECACHEUR MARYSE; ROBIN YVES
权利人:POUDRES & EXPLOSIFS STE NALE
摘要:The present invention relates to a process for the synthesis of 1,4-disubstituted pyrazoles. A monosubstituted hydrazine is reacted with the product of reaction of an acetal with an N-substituted halomethyliminium salt, preferably N,N-dimethylchloromethyliminium chloride. n The 1,4-disubstituted pyrazoles are, in particular, important intermediates in the synthesis of herbicides or drugs.

专利号:WO-2022034429-A1
优先权日:2020-08-10
标 题 :PROCESS OF SYNTHESIS OF β-6'SULFOQUINOVOSYL DIACYLGLYCEROLS
发明人：MANZO EMILIANO; FONTANA ANGELO; ZIACO MARCELLO
权利人:BIOSEARCH S R L
摘要:The present invention relates to a synthesis process of β-6-sulfoquinovosyl-diacylglycerols. In particular, said process is for the synthesis of the compounds 1,2-O-distearoyl-3-O-(β- sulfoquinovosyl)- R/S -glycerol, 1,2-O-distearoyl-3-O-(β-sulfoquinovosyl)- R -glycerol or 1,2- O-distearoyl-3-O-(β-sulfoquinovosyl)- S -glycerol, named respectively Sulfavant A, Sulfavant R and Sulfavant S.