6291-85-6Relevant articles and documents
Preparation method of 3-ethoxypropylamine
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Paragraph 0016; 0020-0025, (2019/03/08)
The invention discloses a preparation method of 3-ethoxypropylamine. The preparation method comprises the following steps: 1) adding a catalyst A and ethanol into a reactor; 2) controlling the temperature of the reactor and dripping acrylonitrile; 3) preparing 3-ethoxy propionitrile with the content of more than 97%; 4) hydrogenating the prepared 3-ethoxy propionitrile in the presence of a catalyst B, hydrogen and an inhibitor; and 5) after the hydrogenation is qualified, carrying out vacuum vacuum distillation to obtain a finished product with a content greater than 99.5%. The preparation method has high selectivity, and excessive ethanol and the catalysts A and B in the process can be recycled, thus further reducing the production cost and reducing the discharge amount of waste liquid.
4-unsubstituted dihydroisoquinolinone derivatives and combinatorial libraries thereof
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, (2008/06/13)
The present invention relates to novel dihydroisoquinolinone (DHQ) derivative compounds of the following formula: wherein R1to R7, X, Y, Z, b, c and d have the meanings provided herein. The invention further relates to combinatorial libraries containing two or more such compounds, as well as methods of preparing DHQ derivative compounds.
2-aminopyridine derivatives and combinatorial libraries thereof
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, (2008/06/13)
The present invention relates to novel 2-aminopyridine derivative compounds of the following formula: wherein R1to R5have the meanings provided herein. The invention further relates to combinatorial libraries containing two or more such compounds, as well as methods of preparing 2-aminopyridine derivative compounds.
Process for the preparation of 2-nitrobenzaldehydes
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, (2008/06/13)
The new process for the preparation of 2-nitrobenzaldehydes of the general formula STR1 in which X1 and X2 either independently of one another represent hydrogen or halogen or one of the substituents represents nitro and the other substituent then represents hydrogen, by oxidation of 2-nitrotoluenes of the general formula STR2 in which X1 and X2 have the meaning indicated above is characterized in that the oxidation with oxygen or an oxygen-containing gas is carried out in the presence of at least one alkoxyalkylamine as a solvent and in the presence of strong bases.
Aldose epimerization by Ni(II): effect of ether-containig alkylenediamine ligands
Osanai, Shuichi,Inaba, Kiyoshi,Yoshikawa, Sadao
, p. 289 - 295 (2007/10/02)
Several N-substituted ethylenediamine (en) Ni(II) derivatives containing ether linkages were prepared in order to study the effect of ligand structure on C-2 epimerization of aldohexoses.The reagent consisted of a Ni(II)-alkyenediamine derivative in methanol.The presence of ether linkages in the ligand increased the solubilty of the complexes, and resulted in an increase in the rate of epimerization.Epimerization occured rapidly under mild conditions, and the same equilibrium point was reached regardless of whether the reaction was started from glucose or mannose.Among the ligands studied, N,N'-dialkylethylenediamine was the most effective in C-2 epimerization.
Triazinyl reactive dyestuffs in which triazinyl group is further substituted with a beta-chloroethylsulfonyl- or vinylsulfonylbutyrylamino moiety
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, (2008/06/13)
Reactive dyes of the formula STR1 in which D is the radical of an organic dye of the monoazo, polyazo, metal complex azo, anthraquinone, phthalocyanine, formazan, azomethine, dioxazine, phenazine, stilbene, triphenylmethane, xanthene, thioxanthrone, nitroaryl, naphthoquinone, pyrenequinone or perylenetetracarbimide series, R is hydrogen or substituted or unsubstituted C1-4 -alkyl, X is a substituent which is detachable as an anion, B is a radical of the formula STR2 R1 and R2, independently of each other, are hydrogen or substituted or unsubstituted C1-4 -alkyl or phenyl, A is a substituted or unsubstituted aliphatic or aromatic bridge member, Y is a --CO--Z or --SO2 --Z radical, Z is an aliphatic, aromatic or heterocyclic reactive radical, and n is 1 or 2, are suitable for dyeing or printing cellulose-containing and nitrogen-containing materials and in high dyeing yield produce dyeings and prints having good fastness properties.