Method for preparing 4-hydroquinolines and/or tautomeric compounds
    1.
    发明授权
    Method for preparing 4-hydroquinolines and/or tautomeric compounds 失效
    制备4-氢喹啉和/或互变异构化合物的方法

    公开(公告)号:US06362340B1

    公开(公告)日:2002-03-26

    申请号:US09856810

    申请日:2001-05-25

    申请人: Tuan-Phat Dang

    发明人: Tuan-Phat Dang

    IPC分类号: C07D21522

    CPC分类号: C07D215/233 C07D215/56

    摘要: The invention concerns a method for preparing 4-hydroquinolines and/or tautomeric compounds. More particularly, the invention concerns 5,7-dichloro-4-quinolines and/or its tautomeric compounds. The method is characterized in that it consists in heating a 4-hydroquinolinecarboxylic acid, its derivatives or precursors, at a temperature not more than 200° C. in the presence of a base.

    摘要翻译: 本发明涉及一种制备4-氢喹啉和/或互变异构化合物的方法。 更具体地,本发明涉及5,7-二氯-4-喹啉和/或其互变异构化合物。 该方法的特征在于其在碱存在下,在不高于200℃的温度下加热4-氢喹啉羧酸,其衍生物或前体。

    Sulphonated chiral phosphines, their preparation and their use
    3.
    发明授权
    Sulphonated chiral phosphines, their preparation and their use 失效
    磺化手性膦,其制备及其用途

    公开(公告)号:US4654176A

    公开(公告)日:1987-03-31

    申请号:US635185

    申请日:1984-07-27

    摘要: The invention provides novel sulphonated chiral phosphines of the formula: ##STR1## in which R represents an alkyl radical, a cycloalkyl radical optionally substituted with an alkyl radical, a cycloalkylalkyl radical optionally substituted with an alkyl radical, a phenyl, phenylalkyl, binaphthyl or binaphthylalkyl radical, in which the alkyl, cycloalkyl, phenyl and binaphthyl radicals, and the alkyl portions of the other radicals, can be substituted by a radical of general formula: ##STR2## R.sub.1 represents an alkyl, cycloalkyl, phenyl, or phenylalkyl radical, Ar represents a phenyl or naphthyl radical, m.sup.+ represents a proton or alkali metal ion or alkaline earth metal ion, m=1 or 2, n=0, 1 or 2, p=1 or 2, (p+m) .ltoreq.3, and R and R.sub.1 can be chiral or achiral. These chiral phosphines form water-soluble metal complexes useful as catalysts in asymmetric organic synthesis.

    摘要翻译: 本发明提供下式的新型磺化手性膦:其中R表示烷基,任选被烷基取代的环烷基,任选被烷基取代的环烷基烷基,苯基,苯基烷基,联萘或联萘基 其中烷基,环烷基,苯基和联萘基以及其它基团的烷基部分可以被下列基团取代:R 1表示烷基,环烷基,苯基或苯基烷基,Ar 表示苯基或萘基,m +表示质子或碱金属离子或碱土金属离子,m = 1或2,n = 0,1或2,p = 1或2,(p + m) ,R和R 1可以是手性或非手性的。 这些手性膦形成水溶性金属络合物,可用作不对称有机合成中的催化剂。