会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 11. 发明授权
    • Process for the production of [2-(4-fluoro-benzyl)-phenyl]-acetic acid
    • 制备[2-(4-氟 - 苄基) - 苯基] - 乙酸的方法
    • US07470809B2
    • 2008-12-30
    • US11574300
    • 2005-08-26
    • Michel Joseph Maurice André GuillaumeYolande Lydia LangArmin RoesslerLars UlmerStefan Marcel Herman LeursDirk De Smaele
    • Michel Joseph Maurice André GuillaumeYolande Lydia LangArmin RoesslerLars UlmerStefan Marcel Herman LeursDirk De Smaele
    • C07C51/00C07C55/28
    • C07C57/58C07C51/08C07C51/373C07C51/377C07C65/34C07C63/72
    • The present invention relates to a novel process for the production of [2-(4-fluoro-benzyl)-phenyl]-acetic acid, a compound obtainable from phthalic anhydride. The process comprises the subsequent steps a) through e): a) reacting phthalic anhydride with fluorobenzene or a derivative thereof in appropriate reaction conditions; b) over reducing the product obtained in step a) at the ketone moiety; c) reducing the product obtained in step b) with sodium dihydro-bis(2-methoxyethoxy)aluminate (Red-Al) to the corresponding alcohol; d) chlorinating the alcohol obtained in step c); e) inserting CO into the product obtained in step d) through an appropriate Pd-containing catalytic system. In an alternative embodiment, the step e) is replaced by the steps f1) and f2): f1) reacting the product obtained in step d) with sodium cyanide; f2) hydrolysing the product obtained in step f1). The present invention provides a process for the production of [2-(4-fluoro-benzyl)-phenyl]-acetic acid which is suitable for industrial scale reactors (e.g. which is cleaner and more efficient). Also, [2-(4-fluoro-benzyl)-phenyl]-acetic acid is obtained as a crystalline material with a purity >95%.
    • 本发明涉及生产由邻苯二甲酸酐获得的化合物的[2-(4-氟 - 苄基) - 苯基] - 乙酸的新方法。 该方法包括随后的步骤a)至e):a)在合适的反应条件下使邻苯二甲酸酐与氟苯或其衍生物反应; b)在酮部分上还原在步骤a)中获得的产物; c)将步骤b)中得到的产物用二氢 - 双(2-甲氧基乙氧基)铝酸钠(Red-Al)还原成相应的醇; d)氯化步骤c)中得到的醇; e)通过合适的含Pd催化体系将CO插入到步骤d)中获得的产物中。 在替代实施方案中,步骤e)被步骤f1)和f2)代替:f1)使步骤d)中获得的产物与氰化钠反应; f2)水解步骤f1)中获得的产物。 本发明提供了适用于工业规模的反应器(例如更清洁和更有效)的[2-(4-氟 - 苄基) - 苯基] - 乙酸的生产方法。 此外,得到纯度> 95%的结晶物质的2-(4-氟 - 苄基) - 苯基] - 乙酸。
    • 19. 发明授权
    • Diacetylenics containing adjacent triple bonds
    • 含有相邻三键的二乙酰基
    • US06440056B1
    • 2002-08-27
    • US09845106
    • 2001-04-27
    • Alok SinghPaul SchoenDan ZabetakisJoel M. Schnur
    • Alok SinghPaul SchoenDan ZabetakisJoel M. Schnur
    • C11B300
    • C07C51/373C07C51/353C07C57/24C07C59/76C07C59/84
    • This invention pertains to a process for preparing diacetylenics, to diacetylenic compounds and to reduced diacetylenic compounds. The process includes the steps of reacting coupling an acetylenic acid in presence of cupric chloride in Ethylamine and hydroxylamine hydrochloride to form a diacetylenic diacid; reacting the diacetylenic diacid with a lithium compound, trimethylsilyl chloride and hydrochloric acid to form a diacetylenic compound; and reducing the diacetylenic compound to a reduced diacetylenic compound. The diacetylenic compounds have the formula COOH—(CH2)m—C≡C—C≡C—(CH2)m—C(═O)—R or R—C(═O)—(CH2)m—C≡C—C≡C—(CH2)m—C(═O)—R and the reduced cyclic diacetylenic compounds have the formula COOH—(CH2)m—C≡C—C≡C—(CH2)m—CH2—R or R—CH2—(CH2)m—C≡C—C≡C—(CH2)m—CH2—R, where m is 1-18 and R is selected from alkyl groups of 1-10 and cyclic groups containing 6-35 carbon atoms and aryl moieties
    • 本发明涉及制备二乙炔基化合物,二乙炔化合物和还原二炔化合物的方法。 该方法包括使乙酸氯化物在乙胺和盐酸羟胺存在下偶联乙酸以形成二乙炔二酸的步骤; 使二乙炔二酸与锂化合物,三甲基甲硅烷基氯和盐酸反应,形成二乙炔化合物; 并将二乙炔化合物还原成还原的二乙炔化合物。 二乙炔化合物具有式COOH-(CH2)mC = CC = C-(CH2)mC(= O)-R或RC(= O) - (CH2)mC = CC = C-(CH2)mC(= O )-R并且还原的环状二炔化合物具有式COOH-(CH 2)m C = CC = C-(CH 2)m -CH 2 -R或R-CH 2 - (CH 2)m C = CC = C-(CH 2)m - CH2-R,其中m为1-18,R选自1-10的烷基和含有6-35个碳原子的环状基团和芳基部分