合成目标产物 Ethyl 3-Mercaptopropionate 主要起始原料 Ethanol And 3-Mercaptopropionic Acid
(文献来源)合成步骤主要原料 Ethanol 和 3-Mercaptopropionic Acid
3,3'-硫代二丙酸二乙酯置于氨,Potassium Amide体系中,化学反应生成 3-巯基丙酸乙酯 参考文献:Cardwell,Journal Of The Chemical Society,1949,P. 718 标题:Cardwell,Journal Of The Chemical Society,1949,P. 718
专利号:WO-2009047354-A1 优先权日:2007-10-12 标题:Chemo-enzymatic synthesis of a c-terminal thioester of an amino acid or a peptide 发明人:QUAEDFLIEG PETER JAN LEONARD MARIO; MERKX NICOLAAS SEBASTIAAN MICHEL 权利人:DSM IP ASSETS BV; QUAEDFLIEG PETER JAN LEONARD M; MERKX NICOLAAS SEBASTIAAN MICH 摘要:The present invention relates to a method for synthesising a C-terminal thioester of an N-protected amino acid or an optionally N-protected oligopeptide, comprising reacting a thiol with a compound selected from optionally N-protected amino acids, amino acid C-terminal esters (other than the ester to be synthesised) and optionally N-protected oligopeptide C-terminal esters (other than the ester to be synthesised) in the presence of a hydrolytic enzyme, thereby forming the thioester.
专利号:US-5922910-A 优先权日:1997-08-27 标 题 :Synthesis of carboxyalkylthiosuccinic acids 发明人:LABAT YVES; MULLER JEAN-PIERRE 权利人:ATOCHEM ELF SA 摘要:Process for the preparation of a carboxyalkylthiosuccinic acid of formula ##STR1## in which n=1 to 3 and Râ•?H or CH 3 , a mercapto ester of formula HS--(CH 2 ) n --COOR' in which R' is a C 1 to C 4 alkyl radical, is reacted, in aqueous medium and without a catalyst, with maleic acid, citraconic acid or their anhydride. The invention is more particularly directed towards the preparation of carboxyethylthiosuccinic acid (CETSA).
专利号:US-5998629-A 优先权日:1998-12-02 标题 :Synthesis of pyrazolotriazole photographic dye forming color couplers and intermediates 发明人:BOSE JUDITH A; VALENTE RONALD R; AIMINO DINO; DEMEJO DEBORAH D 权利人:EASTMAN KODAK CO 摘要:Photographic pyrazolotriazole dye forming coupler compound or coupler intermediate compounds can be readily prepared by inducing an elimination-addition reaction between certain pyrazolotriazole compounds and aromatic amines in the presence of an inorganic base or formate. Yields and purity are high, and reaction time is reduced with the specific set of conditions and reactants, and environmental impact from waste is reduced. The resulting compounds can be used themselves as photographic dye forming couplers or further reacted to prepare useful coupler compounds for photographic use.
专利号:US-6008369-A 优先权日:1998-12-02 标题 :One-pot synthesis of pyrazolotriazole photographic dye forming color couplers and coupler intermediates 发明人:VALENTE RONALD R; BOSE JUDITH A 权利人:EASTMAN KODAK CO 摘要:Photographic pyrazolotriazole dye forming coupler compounds of coupler intermediate compounds can be readily prepared in a single reaction medium by reacting certain pyrazolotriazole compounds with nitro-substituted aromatic compounds in the presence of a formate salt and a transition metal catalyst. This salt hydrogenates the nitro group and the carbonate by-product induces reaction of the resulting amine with the pyrazolotriazole compound. Yields and purity are high, and reaction time is reduced with the specific set of conditions and reactants, and environmental impact from waste is reduced. In addition, isolation of aromatic amine intermediates is avoided. The resulting pyrazolotriazole compounds can be used themselves as photographic dye forming couplers or further reacted to prepare useful coupler compounds for photographic use.
专利号:US-8816050-B2 优先权日:2006-03-22 标题:Method of preparing glycopeptides 发明人:WONG CHI-HUEY; BRIK ASHRAF; YANG YU-YING; FICHT SIMON; PAYNE RICHARD 权利人:WONG CHI-HUEY; BRIK ASHRAF; YANG YU-YING; FICHT SIMON; PAYNE RICHARD; SCRIPPS RESEARCH INST 摘要:A method is provided for the synthesis of glycopeptides using a sugar assisted ligation strategy, wherein an N-terminal peptide portion in the form of a thioester is coopled with a C-terminal peptide portion bearing a carbohydrate moiety comprising a thiol group.
专利号:US-11427612-B2 优先权日:2018-08-21 标题:Epimerization-free N to C solid-phase peptide synthesis 发明人:STOCKDILL JENNIFER L; ARBOUR CHRISTINE A 权利人:UNIV WAYNE STATE 摘要:The present disclosure provides a method of solid-phase peptide synthesis from the N terminus to C terminus without detectable epimerization of the C-terminal amino acid. The method includes using derivatized amino acids comprising a diamino-aryl group.
摘要:M. M. Kreevoy, B. E. Eichinger, F. E. Stary, E. A. Katz and S. Sellstedt, J. Org. Chem. 29, 1641 (1964). 参考文献:10.1021/jf800307d 摘要:Sourabié AM, Spinnler HE, Bonnarme P, Saint-Eve A, Landaud S. Identification of a powerful aroma compound in munster and camembert cheeses: ethyl 3-mercaptopropionate. J Agric Food Chem. 2008 Jun 25;56(12):4674–80. doi: 10.1021/jf800307d.