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    • 2. 发明授权
    • Process for the preparation of 1,4-bis(4-hydroxybenzoyl)benzene
    • 制备1,4-双(4-羟基苯甲酰基)苯的方法
    • US5264633A
    • 1993-11-23
    • US854658
    • 1992-04-29
    • Joachim HackenbruchTheodor PapenfuhsArnold Schneller
    • Joachim HackenbruchTheodor PapenfuhsArnold Schneller
    • B01J31/02C07B61/00C07C45/54C07C49/83
    • C07C45/54
    • A process for the preparation of 1,4-bis(4-hydroxybenzoyl)benzene of the formula (I) ##STR1## by rearranging diphenyl terephthalate of the formula (II) ##STR2## in about 3 to about 50 parts, relative to the diphenyl terephthalate, of an anhydrous organic solvent which is inert to the reactants, in the presence of about 30 to about 500 mol-% of a haloalkanesulfonic acid (catalyst) of the general formula (III) or (IV)Y(C.sub.n X.sub.2n)SO.sub.3 H (III)Y(C.sub.n F.sub.2n)SO.sub.3 H (IV)in which Y is a fluorine or hydrogen atom, and X is a fluorine and/or chlorine atom, with the proviso that at least one X is a fluorine atom, and n is an integer from 1 to 10, at temperatures of about 10.degree. to about 200.degree. C.
    • PCT No.PCT / EP90 / 01809 Sec。 一九九二年四月二十九日 102(e)日期1992年4月29日PCT 1990年10月25日PCT PCT。 公开号WO91 / 0652400 1991年5月16日。一种通过重新排列式(II)的对苯二甲酸二苯酯的制备式(I)的1,4-双(4-羟基苯甲酰基)苯的方法(I) )在约30至约500摩尔%的通式(I)的卤代烷基磺酸(催化剂)存在下,相对于对苯二甲酸二苯酯,为约3至约50份对反应物呈惰性的无水有机溶剂 (III)或(IV)Y(CnX2n)SO3H(Ⅲ)Y(CnF2n)SO3H(IV),其中Y是氟或氢原子,X是氟和/或氯原子,条件是至少 一个X是氟原子,n是1至10的整数,在约10至约200℃的温度下
    • 4. 发明授权
    • Process for the preparation of biaryls
    • 联芳基的制备方法
    • US5451703A
    • 1995-09-19
    • US255550
    • 1994-05-31
    • Thomas SchachTheodor PapenfuhsJoachim Hackenbruch
    • Thomas SchachTheodor PapenfuhsJoachim Hackenbruch
    • C07B37/04C07C17/26C07C1/32
    • C07B37/04C07C17/269
    • Process for the preparation of biaryls of the formula (1)R.sup.1.sub.m --Ar--Ar--R.sup.1.sub.m (1)wherein Ar is a phenylene or naphthylene radical, R.sup.1 is a hydrogen, fluorine or chlorine atom or an unbranched or branched alkyl(C.sub.1 -C.sub.6)--, alkyl(C.sub.1 -C.sub.6)--O--, alkyl(C.sub.1 -C.sub.6)--CO-- or alkyl(C.sub.1 -C.sub.6)--SO.sub.2 -- radical and m is the number of still unsubstituted ##STR1## positions on the Ar radical, in which a compound of the formula (2)R.sup.1.sub.m --Ar--X (2)wherein Ar, R.sup.1 and m have the meanings cited above and X is a chlorine or bromine atom, is dehalogenated and dimerized in the presence of a palladium catalyst on a support material, of a reducing agent, a hydrogen halide acceptor, a polyether or polyether mixture and of water at temperatures of about 50.degree. to about 120.degree. C.
    • 制备式(1)的联芳基的方法R1m-Ar-Ar-R1m(1)其中Ar为亚苯基或亚萘基,R1为氢,氟或氯原子或未支化或支链烷基(C1-C6 ) - ,烷基(C 1 -C 6)-O-,烷基(C 1 -C 6)-CO-或烷基(C 1 -C 6)-SO 2 - 基,m是​​Ar基团上仍未取代的取代基数, 其中式(2)R1m-Ar-X(2)的化合物其中Ar,R1和m具有上述含义,X为氯或溴原子,在钯催化剂存在下脱卤并二聚 还原剂,卤化氢受体,聚醚或聚醚混合物和水的载体材料,在约50℃至约120℃的温度下进行。