Process for preparing biphenyls using palladacycles as catalysts
    13.
    发明授权
    Process for preparing biphenyls using palladacycles as catalysts 失效
    使用帕拉达环作为催化剂制备联苯的方法

    公开(公告)号:US5559277A

    公开(公告)日:1996-09-24

    申请号:US496392

    申请日:1995-06-29

    摘要: The invention relates to a process for preparing biphenyls of the formula (I) ##STR1## where R.sup.1a to R.sup.10a are, independently of one another, hydrogen, C.sub.1 -C.sub.12 -alkyl, C.sub.1 -C.sub.12 -alkenyl, C.sub.1 -C.sub.12 -alkynyl, alkoxy-(C.sub.1 -C.sub.12), acyloxy-(C.sub.1 -C.sub.12), O-phenyl, aryl, heteroaryl, fluorine, chlorine, OH, NO.sub.2, CN, COOH, CHO, SO.sub.3 H, SO.sub.2 R, SOR, NH.sub.2, NH-alkyl-(C.sub.1 -C.sub.12), N-alkyl.sub.2 -(C.sub.1 -C.sub.12), C-Hal.sub.3, NHCO-alkyl-(C.sub.1 -C.sub.8), CONH-alkyl-(C.sub.1 -C.sub.4), CON-(alkyl).sub.2 -(C.sub.1 -C.sub.4), COO-alkyl-(C.sub.1 -C.sub.12), CONH.sub.2, CO-alkyl-(C.sub.1 -C.sub.12), NHCOH, NHCOO-alkyl-(C.sub.1 -C.sub.8), CO-phenyl, COO-phenyl, CHCHCO.sub.2 -alkyl-(C.sub.1 -C.sub.12), CHCHCO.sub.2 H, PO-phenyl.sub.2, PO-alkyl.sub.2 -(C.sub.1 -C.sub.8), by reaction of haloaromatics or aryl sulfonates of the formula (II) ##STR2## with arylboron derivatives of the formula III ##STR3## where R.sup.1a to R.sup.10a are as defined above and X is bromine, chlorine or OSO.sub.2 CF.sub.3, OSO.sub.2 -aryl, OSO.sub.2 -alkyl and Y is B(OH).sub.2, B(O-alkyl).sub.2, B(O-aryl).sub.2, wherein a palladium compound of the formula (IV) ##STR4## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 are, independently of one another, hydrogen, (C.sub.1 -C.sub.4)-alkyl, (C.sub.5 -C.sub.8)-cycloalkyl, (C.sub.1 -C.sub.4)-alkoxy, fluorine, NH.sub.2, NH-alkyl(C.sub.1 -C.sub.4), N(alkyl).sub.2 -(C.sub.1 -C.sub.4), CO.sub.2 -alkyl-(C.sub.1 -C.sub.4), OCO-alkyl-(C.sub.1 -C.sub.4) or phenyl, or R.sup.1 and R.sup.2, R.sup.2 and R.sup.3, R.sup.3 and R.sup.4, R.sup.5 and R.sup.6 together form an aliphatic or aromatic ring, and R.sup.7, R.sup.8 are (C.sub.1 -C.sub.8)-alkyl, (C.sub.3 -C.sub.12)-cycloalkyl, substituted or unsubstituted aryl and Y is an anion of an inorganic or organic acid, is used as catalyst.

    摘要翻译: 本发明涉及一种制备式(I)的联苯的方法,其中R 1a至R 10a各自独立地为氢,C 1 -C 12 - 烷基,C 1 -C 12 - 烯基,C 1 -C 12 - 炔基,烷氧基 - (C1-C12),酰氧基 - (C1-C12),O-苯基,芳基,杂芳基,氟,氯,OH,NO2,CN,COOH,CHO,SO3H,SO2R,SOR,NH2, 烷基 - (C1-C12),N-烷基2-(C1-C12),C-Hal3,NHCO-烷基 - (C1-C8),CONH-烷基 - (C1-C4),CON-(烷基) C 1 -C 4烷基 - (C 1 -C 12),CONH 2,CO-烷基 - (C 1 -C 12),NHCOH,NHCOO-烷基 - (C 1 -C 8),CO-苯基,COO-苯基,CHCHCO 2 - 烷基 (II)的卤代芳族化合物或芳基磺酸盐与式III的芳基硼衍生物反应,得到(C1-C12),CHCHCO2H,PO-苯基2,PO-烷基2-(C1-C8) (III)其中R1a至R10a如上定义,X​​为溴,氯或OSO2CF3,OSO2-芳基,OSO2-烷基,Y为B(OH)2,B(O-烷基)2,B(O- 芳基)2,其中式(IV)的化合物(IV)其中R 1,R 2,R 3,R 4,R 5,R 6独立地为 (C 1 -C 4) - 烷基,(C 1 -C 4) - 烷氧基,氟,NH 2,NH-烷基(C 1 -C 4),N(烷基) C4),CO 2烷基 - (C1-C4),OCO-烷基 - (C1-C4)或苯基,或R1和R2,R2和R3,R3和R4,R5和R6一起形成脂族或芳香环, R 7,R 8为(C 1 -C 8) - 烷基,(C 3 -C 12) - 环烷基,取代或未取代的芳基,Y为无机或有机酸的阴离子。