Process for the preparation of 4-chloroquinolines
    1.
    发明授权
    Process for the preparation of 4-chloroquinolines 失效
    4-氯喹啉的制备方法

    公开(公告)号:US4277607A

    公开(公告)日:1981-07-07

    申请号:US942652

    申请日:1978-09-15

    CPC分类号: C07D215/18

    摘要: Novel process for the preparation of 4-chloroquinolines of the formula ##STR1## wherein X is in the 5,6,7 or 8-position and is selected from the group consisting of hydrogen, methyl, halogen, CF.sub.3 --, CF.sub.3 O-- and CF.sub.3 S-- by reacting a compound of the formula ##STR2## or a functional derivative thereof with a chlorination agent in the presence of an oxidation agent and to a novel intermediate.

    摘要翻译: 用于制备式(VI)的4-氯喹啉的新方法,其中X为5,6,7或8-位,并且选自氢,甲基,卤素,CF 3 - ,CF 3 O-和 CF 3 S-通过在氧化剂存在下使式II的化合物或其官能衍生物与氯化剂反应,并与新的中间体反应。

    Resolution of D,L-cis and D,L-trans
2,2-dimethyl-3-(2,2-dihalovinyl)-cyclopropane-1-carboxylic acids and
salts thereof
    2.
    发明授权
    Resolution of D,L-cis and D,L-trans 2,2-dimethyl-3-(2,2-dihalovinyl)-cyclopropane-1-carboxylic acids and salts thereof 失效
    拆分D,L-顺式和D,L-反式2,2-二甲基-3-(2,2-二卤代乙烯基) - 环丙烷-1-羧酸及其盐

    公开(公告)号:US4328173A

    公开(公告)日:1982-05-04

    申请号:US130994

    申请日:1980-03-17

    CPC分类号: C07C51/487

    摘要: A novel process for the resolution of D,L-cis and D,L-trans 2,2-dimethyl-3-(2,2 -dihalovinyl)-cyclopropane-1-carboxylic acids of the formula ##STR1## wherein X is selected from the group consisting of fluorine, chlorine and bromine comprising salifying the said acid with an optically active base selected from the group consisting of D-ephedrine, L-ephedrine, D-N-methyl-ephedrine, L-N-methylephedrine, D-pseudo-ephedrine and L-pseudo-ephedrine to form the corresponding salt, recovering the said salt and subjecting the latter to acid hydrolysis to obtain the corresponding resolved acid which are intermediates for the synthesis of esters having a remarkable insecticidal activity.

    摘要翻译: 用于拆分式I的D,L-顺式和D,L-反式2,2-二甲基-3-(2,2-二卤乙烯基) - 环丙烷-1-羧酸的新方法,其中X为 选自氟,氯和溴,其包括用选自D-麻黄碱,L-麻黄碱,DN-甲基麻黄碱,LN-甲基麻黄碱,D-假麻黄素的光学活性碱使所述酸成盐 和L-假麻黄碱形成相应的盐,回收所述盐并使其进行酸水解,得到相应的分解酸,其是合成具有显着杀虫活性的酯的中间体。

    Process for racemization of allethrolone
    4.
    发明授权
    Process for racemization of allethrolone 失效
    依诺酮的外消旋化方法

    公开(公告)号:US4111993A

    公开(公告)日:1978-09-05

    申请号:US795021

    申请日:1977-05-09

    CPC分类号: C07B55/00 C07C49/707

    摘要: A novel process for the preparation of racemic allethrolone of the (R,S) configuration comprising heating optically active allethrolone of the (R) configuration or of the (S) configuration or a mixture of the (R) and (S) configurations in non-equimolecular proportions with formic acid to form the formate of racemic allethrolone of (R,S) configuration and hydrolyzing the latter in the presence of an acid or base to obtain racemic (R,S) allethrolone.

    摘要翻译: 一种用于制备(R,S)构型的外消旋体罗替罗的新方法,其包括将(R)构型或(S)构型的光学活性羟基苯酮或(R)和(S) (R,S)构型的外消旋酚醛甲酸甲酯,并在酸或碱的存在下水解后者,得到外消旋(R,S)羟基吗啡酮。

    Novel purification process
    5.
    发明授权
    Novel purification process 失效
    新型净化工艺

    公开(公告)号:US4277408A

    公开(公告)日:1981-07-07

    申请号:US97710

    申请日:1979-11-27

    IPC分类号: C07J9/00

    CPC分类号: C07J9/005

    摘要: A novel process for the purification of 3.alpha.,7.alpha.-dihydroxy-(5.beta.)-cholanic acid comprising crystallizing the said product from methylene chloride.

    摘要翻译: 一种用于纯化3α,7α-二羟基 - (5β) - 胆碱的新方法,其包括从二氯甲烷中结晶所述产物。