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    • 9. 发明授权
    • Recovery of bis(diarylphenol) ligands during the production of isopulegol
    • 在异高粱生产期间回收双(二芳基苯酚)配体
    • US08134034B2
    • 2012-03-13
    • US12439270
    • 2007-08-31
    • Gunnar HeydrichGabriele GrallaKlaus Ebel
    • Gunnar HeydrichGabriele GrallaKlaus Ebel
    • C07C35/08C07C35/12C07C29/80
    • C07C29/56B01J31/0214B01J31/143B01J31/4015B01J2531/31C07B2200/07C07C29/172C07C29/80C07C2601/14Y02P20/584C07C35/12C07C35/17
    • The present invention relates to a method of working up an aluminium-containing reaction product from the production of isopulegol by cyclization of citronellal in the presence of complex compounds, comprising at least one ligand of the formula (I), where Ar1, Ar2, Ar3, Ar4 are chosen from C6-C15-aryl or C2-C15-hetero; R1, R2, R3, R4 are chosen from H, C1-C6-alkyl, C1-C6-perfluoroalkyl, C1-C6-alkoxy, C7-C12-aralkyl, halogen, SiR5bR6bR7b, C6-C10-aryl, NR8bR9b, SR10b, NO2; and where R1 or R2 and/or R3 or R4, together with A, can form an aromatic or nonaromatic cycle; etc.; in which a) the aluminum-containing reaction product is subjected to distillative separation, b) the isopulegol-depleted bottom product is brought into close contact with an aqueous base and c) the ligand of the formula (I) is separated off from the organic phase, preferably by crystallization. Moreover, the invention relates to a method of producing isopulegol, and to a method of producing menthol.
    • 本发明涉及一种通过在络合物存在下使香茅醛环化制备异胡醇的方法,所述复合化合物包含至少一种式(I)的配位体,其中Ar 1,Ar 2,Ar 3 ,Ar 4选自C 6 -C 15 - 芳基或C 2 -C 15 - 杂原子; R1,R2,R3,R4选自H,C1-C6-烷基,C1-C6-全氟烷基,C1-C6-烷氧基,C7-C12-芳烷基,卤素,SiR5bR6bR7b,C6-C10-芳基,NR8bR9b,SR10b, NO2; 并且其中R 1或R 2和/或R 3或R 4与A一起可以形成芳族或非芳族化合物; 等等。; 其中a)使含铝反应产物进行蒸馏分离,b)将异底三醇消耗的底部产物与碱水溶液紧密接触,并且c)将式(I)的配体与有机物分离出来 相,优选通过结晶。 此外,本发明涉及一种生产异胡母醇的方法和一种制备薄荷醇的方法。