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    • 32. 发明授权
    • Process for catalytic dimerization of acrylic acid derivatives
    • 丙烯酸衍生物的催化二聚方法
    • US4594447A
    • 1986-06-10
    • US657292
    • 1984-10-03
    • Gunther WilkeKarin SperlingLudwig Stehling
    • Gunther WilkeKarin SperlingLudwig Stehling
    • B01J31/00B01J31/24C07B61/00C07C67/347C07C67/465C07C69/593C07C67/343
    • C07C67/347
    • The invention relates to a process for the dimerization of derivatives of acrylic acid in the homogeneous phase which process is characterized in that a compound having the general formula H.sub.2 C.dbd.CR.sup.1 -COOR.sup.2, wherein R.sup.1 represents H or a linear alkyl group having from 1 to 3 carbon atoms and R.sup.2 represents a linear alkyl group having from 1 to 3 carbon atoms, is reacted in a solvent at a temperature of from -50.degree. C. to +50.degree. C. in the presence of nickel compounds as catalysts which contain complex anions X in a molar ratio Ni:X=1:1 and organic or hydride ligands and are modifed with phosphanes having the general formula PR.sub.2 R', wherein R and R' may be same or different and represent alkyl residues having from 1 to 8 carbon atoms or phenyl residues, as well as the use of the dimers formed in the dimerization.
    • 本发明涉及在均相中使丙烯酸衍生物二聚的方法,该方法的特征在于具有通式H 2 C = CR 1 -COOR 2的化合物,其中R 1表示H或具有1至3个直链烷基 碳原子和R 2表示具有1至3个碳原子的直链烷基,在溶剂中在-50℃至+ 50℃的温度下在镍化合物作为催化剂存在下反应,所述催化剂含有复合阴离子 X与Ni:X = 1:1的摩尔比和有机或氢化物配体,并用具有通式PR2R'的磷烷改性,其中R和R'可以相同或不同,代表具有1至8个碳原子的烷基 或苯基残基,以及二聚体中形成的二聚体的用途。
    • 33. 发明授权
    • Preparation of unsaturated diester precursor for sebacic acid
    • 制备癸二酸的不饱和二酯前体
    • US4299976A
    • 1981-11-10
    • US80354
    • 1979-09-28
    • Chao-Yang HsuHaven S. Kesling, Jr.
    • Chao-Yang HsuHaven S. Kesling, Jr.
    • C07C67/465B01J31/00C07B61/00C07C69/50C07C69/602
    • C07C69/50C07C69/602
    • A process for producing an unsaturated diester useful as a precursor for sebacic acid which comprises contacting, in a reaction inert medium, methyl penta-2,4-dienoate at a temperature of 30 to 150.degree. C. under an inert atmosphere with a catalytic amount of a homogeneous palladium (II) complex of the formula ##STR1## wherein Q is phosphorous or arsenic; R is alkyl, trichloroalkyl, tribromoalkyl or trifluoroalkyl having from 1 to 6 carbon atoms or aryl having 6 to 12 carbon atoms and R' is alkyl, aminoalkyl or alkoxy having 1 to 6 carbon atoms or aryl or aryloxy having 6 to 12 carbon atoms.The foregoing precursor may subsequently be hydrogenated to dimethyl sebacate and sebacic acid may then be obtained by acid-catalyzed hydrolysis of dimethyl sebacate.
    • 一种制备用作癸二酸前体的不饱和二酯的方法,该方法包括在惰性介质中,在惰性气氛下,在惰性气氛下,在催化剂量的温度下,在30-150℃的温度下,使反应惰性介质中的甲基-2,4-二烯酸甲酯 的具有下式的均匀的钯(II)络合物:其中Q是磷或砷; R是具有1至6个碳原子的烷基,三氯烷基,三溴烷基或三氟烷基或具有6至12个碳原子的芳基,R'是具有1至6个碳原子的烷基,氨基烷基或烷氧基或具有6至12个碳原子的芳基或芳氧基。 随后将上述前体氢化成癸二酸二甲酯,然后可以通过酸式催化水解癸二酸二甲酯来获得癸二酸。