Chiral amino-alcohol complexes
    11.
    发明授权
    Chiral amino-alcohol complexes 失效
    手性氨基醇复合物

    公开(公告)号:US4383112A

    公开(公告)日:1983-05-10

    申请号:US167158

    申请日:1980-07-08

    CPC classification number: C07D207/323 C07D213/53 C07D215/12

    Abstract: Chiral Schiff bases according to the general formula: ##STR1## and transition metal complexes thereof, wherein C.sup.* is an asymmetric carbon atom, R.sup.1 and R.sup.2, which may be the same or different are alkyl, aralkyl, aryl or alkaryl, R.sup.3 is hydrogen, alkyl, aralkyl, aryl or alkaryl, R.sup.4 and R.sup.5, which may be the same or different, are hydrogen or lower alkyl or, where n is 1, may with the cyclic ring to which CR.sup.4 R.sup.5 is attached form a fused system, J is a chain of 3 or 4 atoms which may all be carbon atoms or may be a mixture of carbon atoms and one or more hetero atoms which may be the same or different, which chain with the group C K forms an aromatic system, K is nitrogen, ##STR2## or --NH--, L, each of which may be the same or different, represents a substituent attached to a carbon atom in the chain J and is hydrogen, alkyl, aralkyl, alkaryl, aryl or a substituent containing a hetero-atom; or two L's together with the cyclic ring to which they are attached form a fused system, n is 0, 1 or 2, m is the number of carbon atoms in the chain J. The transition metal is for example copper (II), chromium (II), manganese (II), iron (II), cobalt (II) nickel (II) or palladium (II). The aforesaid complexes may be used as catalysts in the cyclopropanation of olefins by diazoacetates to form insecticide or insecticide precursors.

    Abstract translation: 手性席夫碱,其通式为:其中C *为不对称碳原子,其中R 1和R 2可以相同或不同,为烷基,芳烷基,芳基或烷芳基,R 3为氢 烷基,芳烷基,芳基或烷芳基,R 4和R 5可以相同或不同,为氢或低级烷基,或其中n为1,可以与CR4R5连接的环上形成稠合体系,J为 3或4个原子的链可以全部是碳原子,或者可以是碳原子和一个或多个可以相同或不同的杂原子的混合物,该基团与基团CK形成芳族体系,K是氮, 或者-NH-,L各自可以相同或不同,表示连接在J链上的碳原子上的取代基,是氢,烷基,芳烷基,烷芳基,芳基或含杂原子的取代基, 原子; 或两个L 3与它们所连接的环状基团一起形成稠合体系,n为0,1或2,m为链J中的碳原子数。过渡金属为例如铜(II),铬 (II),锰(II),铁(II),钴(II)镍(II)或钯(II)。 上述络合物可以用作催化剂,通过重氮乙酸酯将烯烃环丙烷化形成杀虫剂或杀虫剂前体。

    Preparation of cyclopropane carboxylic acid esters
    12.
    发明授权
    Preparation of cyclopropane carboxylic acid esters 失效
    制备环丙烷羧酸酯

    公开(公告)号:US4332962A

    公开(公告)日:1982-06-01

    申请号:US238950

    申请日:1981-02-27

    CPC classification number: C07C2101/02

    Abstract: Process for the preparation of 3(2,2-dihalovinyl)-2,2-dimethyl cyclopropane carboxylic acids, especially permethrin acid ethyl ester, by reacting a diazoacetic acid ester with a 1,1-dihalo-4-methyl-1,3-pentadiene in the presence of a catalyst comprising a divalent rhodium salt of a carboxylic acid or borofluoric acid. The products have improved yields and better cis/trans isomer ratios than when the more common catalysts, e.g. copper-bronze, are used.

    Abstract translation: 制备3(2,2-二卤代乙烯基)-2,2-二甲基环丙烷羧酸,特别是氯菊酯酸乙酯的方法是使重氮乙酸酯与1,1-二卤代-4-甲基-1,3- - 戊二烯在包含羧酸或硼氟酸的二价铑盐的催化剂存在下进行。 与更常见的催化剂,例如,较好的催化剂相比,产物具有提高的产率和更好的顺式/反式异构体比例。 铜青铜被使用。

    Preparation of polycyclic dyes
    14.
    发明授权
    Preparation of polycyclic dyes 失效
    多环染料的制备

    公开(公告)号:US5214161A

    公开(公告)日:1993-05-25

    申请号:US898833

    申请日:1992-06-15

    Inventor: David J. Milner

    CPC classification number: C07D493/04 C09B57/00

    Abstract: A process for the preparation of a polycyclic dye of the Formula (1): ##STR1## by reacting a ketal ester of the Formula (2): ##STR2## with a benzofuranone of the Formula (3): ##STR3## wherein: Ring A is unsubstituted or is substituted by from one to three groups:Ring B is unsubstituted, apart from the nitro group, or is substituted by one or two additional groups;each R is independently alkyl.The polycyclic dyes described are useful for the coloration of synthetic textile materials especially polyesters.

    Selective halogenation of benzene di and tri-methanol compounds
    15.
    发明授权
    Selective halogenation of benzene di and tri-methanol compounds 失效
    苯二和三甲醇化合物的选择性卤化

    公开(公告)号:US4590308A

    公开(公告)日:1986-05-20

    申请号:US694161

    申请日:1985-01-23

    CPC classification number: C07C29/62

    Abstract: Process for the monohalogenation of a benzene compound which has 2 or 3 CH.sub.2 OH substituents to obtain a product wherein one of the CH.sub.2 OH substituents is monohalogenated which comprises reacting an aqueous solution of the compound with hydrochloric or hydrobromic acid in the presence of a water immiscible organic solvent which is inert to the reactants, the partition coefficient of the compound in the aqueous/organic phases being greater, with respect to the aqueous phase, than the partition coefficient of the product. The novel compounds4-chloromethyl-2,3,5,6-tetrafluorobenzene methanol and4-bromomethyl-2,3,5,6-tetrafluorobenzene methanol are also disclosed.

    Abstract translation: 具有2或3个CH 2 OH取代基的苯化合物的单卤化方法,以获得其中一个CH 2 OH取代基被单卤代的产物,其中包括使化合物的水溶液与盐酸或氢溴酸在水不混溶的有机溶剂存在下反应 对反应物是惰性的,化合物在水相/有机相中的分配系数相对于水相比分配系数大。 还公开了新化合物4-氯甲基-2,3,5,6-四氟苯甲醇和4-溴甲基-2,3,5,6-四氟苯甲醇。

    Chiral sugar complexes
    16.
    发明授权

    公开(公告)号:US4350811A

    公开(公告)日:1982-09-21

    申请号:US166838

    申请日:1980-07-08

    CPC classification number: C07H15/12 C07F1/005

    Abstract: Chiral Schiff bases according to the general formula: ##STR1## and chiral transition metal complexes thereof, wherein at least the carbon atom of the monosaccharide to which the iminyl nitrogen atom is attached is asymmetric, and at least one of the carbon atoms adjacent the aforesaid carbon atom bears a hydroxyl group, R.sup.1 and R.sup.6 which may be the same or different, are hydrogen or lower alkyl, R.sup.2 is hydrogen, or lower alkyl or together with R.sup.10 forms a divalent hydrocarbon group, R.sup.3 is hydrogen, a sugar residue, or --CH.sub.2 OR.sup.10 in which R.sup.10 is hydrogen, lower alkyl or together with R.sup.2 forms a divalent hydrocarbon group, R.sup.4 is hydrogen or --CH.sub.2 OR.sup.10 in which R.sup.10 is hydrogen, or a lower alkyl, R.sup.5 is hydrogen, OR.sup.1 or a sugar residue, provided that both R.sup.4 and R.sup.5 are not hydrogen, R.sup.7 and R.sup.8 which may be the same or different, are hydrogen, or lower alkyl, or where p is 1, may with the cyclic ring to which CR.sup.7 R.sup.8 is attached form a fused system, R.sup.9 is hydrogen, alkyl, aralkyl, aryl or alkaryl, J is a chain of 3 or 4 atoms which with the group C A forms an aromatic system, which atoms may be carbon atoms or may be a mixture of carbon and one or more hetero atoms which may be the same or different, A is nitrogen, or ##STR2## or --NH--, L each of which may be the same or different, represents a substituent attached to a carbon atom in the chain J and is hydrogen, an alkyl group, aralkyl group, aryl, alkaryl or a substituent containing a hetero-atom; or two L's together with cyclic group to which they are attached form a fused system, m is 0 or 1, n is 0, 1 or 2, provided that n plus m is 0, 1, 2 or 3, p is 0, 1 or 2 and q is the number of carbon atoms in the chain J. The transistion metal is for example copper (II), chromium (II), manganese (II), iron (II), cobalt (II), nickel (II) or palladium (II). The aforesaid complexes may be used as catalysts in the cyclopropanation of olefins by diazoacetates to form insecticide or insecticide precursors.

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