Process for the simultaneous recovery of 4-hydroxy-diphenyl and
4,4'-dihydroxydiphenyl
    41.
    发明授权
    Process for the simultaneous recovery of 4-hydroxy-diphenyl and 4,4'-dihydroxydiphenyl 失效
    同时回收4-羟基 - 二苯基和4,4'-二羟基二苯基的方法

    公开(公告)号:US4538007A

    公开(公告)日:1985-08-27

    申请号:US573990

    申请日:1984-01-26

    CPC分类号: C07C37/86

    摘要: 4-Hydroxydiphenyl (mono-OD) and 4,4'-dihydroxydiphenyl (DOD) are obtained simultaneously from a mixture which contains these two substances, if such a mixture is treated with an aqueous alkali, and the resulting solution and the solid phase formed are separated at a temperature from -28.degree. C. to +40.degree. C. and the solution and the solid phase are acidified separately in order to form the free mono-OD and DOD. Mono-OD and DOD can be present in the starting mixture in the free form or in the form of the alkali metal phenolates. After formation of the alkali metal phenolates, where this is required, the aqueous alkali still contains 1-15 mol of alkali metal hydroxide per mol of the diphenyl compounds. The concentration of alkali metal hydroxide should be 4-25% by weight, relative to the amount of water present. In this process, it is also possible to employ industrial mixtures of the alkali melts of the associated diphenyl-sulphonic acids.

    摘要翻译: 如果这种混合物用碱水溶液处理,则同时从含有这两种物质的混合物中获得4-羟基二苯基(单OD)和4,4'-二羟基二苯基(DOD),并形成所得溶液和固相 在-28℃至+ 40℃的温度下分离,并将溶液和固相分别酸化以形成游离的单OD和DOD。 单一OD和DOD可以以游离形式或碱金属酚盐的形式存在于起始混合物中。 在需要碱金属酚盐形成后,碱水溶液每摩尔二苯基化合物还含有1-15摩尔碱金属氢氧化物。 相对于存在的水量,碱金属氢氧化物的浓度应为4-25重量%。 在该方法中,也可以使用相关联的二苯基磺酸的碱熔体的工业混合物。

    Preparation of 3,6-disubstituted 4-amino-1,2,4-triazin-5-ones
    45.
    发明授权
    Preparation of 3,6-disubstituted 4-amino-1,2,4-triazin-5-ones 失效
    3,6-二取代的4-氨基-1,2,4-三嗪-5-酮的制备

    公开(公告)号:US4408044A

    公开(公告)日:1983-10-04

    申请号:US338811

    申请日:1982-01-11

    CPC分类号: C07D253/065 C07D253/07

    摘要: The herbicidal 3,6-substituted 4-amino-1,2,4-triazin-5-one of the general formula ##STR1## wherein R.sup.1 and R.sup.2 have the meaning given in the description,is obtained in good yields by a new two-stage cyclization reaction if an .alpha.-ketocarboxylic acid amide of the general formulaR.sup.1 --CO--CO--NHR.sup.3 (II)is reacted with a hydrazidine of the general formula ##STR2## if appropriate in the presence of a diluent at temperatures between 0.degree. and 150.degree. C., whereby in the first process stage a condensation reaction takes place to give condensation products which still have open chains, and in the second process stage an elimination reaction with ring closure takes place to give the end product of formula (I).

    摘要翻译: 通过以下方式获得通式(I)的除草3,6-取代的4-氨基-1,2,4-三嗪-5-酮,其中R1和R2具有说明书中给出的含义,以良好的产率由 如果通式为R 1 -CO-CO-NHR 3(II)的α-酮羧酸酰胺与通式为(III)的肼反应,则在适当的情况下,在 稀释剂在0℃至150℃的温度下进行,由此在第一工艺阶段进行缩合反应以产生仍具有开链的缩合产物,并且在第二工艺阶段中进行具有闭环的消除反应,以产生 式(I)的最终产物。

    Process for the preparation of bis-(amino-phenyl)-disulphides
    46.
    发明授权
    Process for the preparation of bis-(amino-phenyl)-disulphides 失效
    双(氨基 - 苯基) - 二硫化物的制备方法

    公开(公告)号:US4375562A

    公开(公告)日:1983-03-01

    申请号:US238348

    申请日:1981-02-26

    CPC分类号: C07C319/24

    摘要: Process for the preparation of a bis-(amino-phenyl)-disulphide of the formula ##STR1## in which R represents hydrogen or halogen,which comprises contacting an amino-thiophenol of the formula ##STR2## or a salt thereof in which R has the abovementioned meaningwith sulphur or a sulphur-donating substance in an aqueous dispersion at a temperature of 10.degree. to 120.degree. C. and a pH value of 3 to 9.

    摘要翻译: 制备式“IMAGE”的双 - (氨基 - 苯基) - 二硫化物的方法,其中R表示氢或卤素,其包括使式IMA的氨基 - 苯硫酚或其盐与 在含水分散体中,在10〜120℃,pH值为3〜9的范围内,使用硫或供硫物质的上述含义。

    Process for the preparation of chloroformic acid aryl esters
    47.
    发明授权
    Process for the preparation of chloroformic acid aryl esters 失效
    氯甲酸芳酯的制备方法

    公开(公告)号:US4366102A

    公开(公告)日:1982-12-28

    申请号:US261082

    申请日:1981-05-06

    摘要: In a process for the preparation of an aromatic chloroformic acid ester by contacting a phenol and phosgene, the improvement wherein the reaction is carried out in a homogeneous liquid phase at a temperature of 60.degree. to 180.degree. C. in the presence of organic phosphorus compound of the formulaR.sup.1 R.sup.2 R.sup.3 PR.sup.4.sub.n X.sub.nin whichR.sup.1, R.sup.2 and R.sup.3 independently of one another represent hydrogen, alkyl, alkenyl, aralkyl, aryl or halogen and two of the said radicals together with the phosphorus atom can form a 5-membered or 6-membered phosphorus-containing saturated or unsaturated heterocyclic radical,X represents OH, homopolar-bonded halogen or an inorganic or organic acid anion,R.sup.4 denotes hydrogen or alkyl or, if X denotes halogen, can also denote halogen and n denotes 0 or 1,and in which, furthermore,R.sup.4 and X together can represent oxygen or sulfur.

    摘要翻译: 在通过使苯酚和光气接触来制备芳族氯甲酸酯的方法中,其中反应在有机磷化合物存在下在60-180℃的温度下在均相液相中进行 其中R 1,R 2和R 3彼此独立地表示氢,烷基,烯基,芳烷基,芳基或卤素,并且所述基团中的两个与磷原子一起形成式R 1 R 2 R 3 PR 4 n X n可以形成5元或6元磷 - 含有饱和或不饱和杂环基,X表示OH,单键键合的卤素或无机或有机酸阴离子,R4表示氢或烷基,或者如果X表示卤素,也可以表示卤素,n表示0或1, 此外,R4和X可以一起代表氧或硫。

    Process for the preparation of sulphonic acid chlorides
    48.
    发明授权
    Process for the preparation of sulphonic acid chlorides 失效
    磺酰氯制备方法

    公开(公告)号:US4314950A

    公开(公告)日:1982-02-09

    申请号:US146827

    申请日:1980-05-05

    CPC分类号: C07C309/00 C07C317/00

    摘要: An improvement in a process for the preparation of a sulphonic acid chloride of the formula ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are independently hydrogen, a lower alkyl radical or a cycloalkyl radical, halogen, aryl, aralkyl, aryl ether or a radical --SO.sub.2 Cl, --SO.sub.2 -aryl ##STR2## or wherein adjacent radicals R.sup.1 and R.sup.2 are linked to form a cycloaliphatic, aromatic or hetero-aromatic ring which is optionally substituted by a sulphonic acid chloride group wherein an aromatic compound of the formula ##STR3## wherein R.sup.1, R.sup.2 and R.sup.3 have the above-identified meanings is reacted initially with chlorosulphonic acid and thereafter the reaction product is reacted with phosgene in the presence of a catalyst.

    摘要翻译: 制备式(I)的磺酰氯的方法的改进,其中R 1,R 2和R 3独立地是氢,低级烷基或环烷基,卤素,芳基,芳烷基,芳基醚或 基团-SO 2 Cl,-SO 2 - 芳基,或其中相邻基团R 1和R 2连接形成任选被磺酰氯基团取代的脂环族,芳族或杂芳族环,其中芳族 其中R1,R2和R3具有上述含义的式(II)化合物最初与氯磺酸反应,然后在催化剂存在下使反应产物与光气反应。

    Process for the preparation of aminomethylene compounds
    50.
    发明授权
    Process for the preparation of aminomethylene compounds 失效
    制备氨基联苯化合物的方法

    公开(公告)号:US5095133A

    公开(公告)日:1992-03-10

    申请号:US552660

    申请日:1990-07-16

    CPC分类号: C07C255/30 C07C227/10

    摘要: Aminomethylene compounds of the formula ##STR1## can be prepared by reaction of C-H acid compounds of the formula ##STR2## with salts of the formula ##STR3## in the presence of alkoxides of the formulaM.sup.1 OR.sup.10 (IV)where the radicals R.sup.1 to R.sup.4, R.sup.7, R.sup.10, X.sup.- and M.sup.1 have the meaning mentioned in the description.

    摘要翻译: 式(I)的氨基亚甲基化合物可以通过在式M1OR10的醇盐存在下,通过式(II)的CH酸化合物与式(III)的盐反应来制备: IV)其中基团R 1至R 4,R 7,R 10,X和M 1具有在说明书中提及的含义。