Preparation of N-acylamino acid esters and N-acylamino acetals
    1.
    发明授权
    Preparation of N-acylamino acid esters and N-acylamino acetals 失效
    N-酰基氨基酸酯和N-酰基氨基缩醛的制备

    公开(公告)号:US06740774B1

    公开(公告)日:2004-05-25

    申请号:US09639681

    申请日:2000-08-16

    IPC分类号: C07C22900

    摘要: A process for preparing N-acyl derivatives of the formula I, in which the substituents independently of one another have the following meanings: X is CH(OR3)2, COOR3; R1 is hydrogen, C1-C12-alkyl, aryl, unsubstituted or substituted; R2 is hydrogen, C1-C12-alkyl, aryl, unsubstituted or substituted; R3 is C1-C12-alkyl, which comprises reacting a carboxamide R1—CONH2 of the formula II with a glyoxal monoacetal derivative of the formula III, in the presence of a carboxylic acid R4—COOH of the formula IV where R4=C1-C12-alkyl, where the substituents R1 to R3 are as defined above, is described.

    摘要翻译: 制备式I的N-酰基衍生物的方法,其中取代基彼此独立地具有以下含义:X是CH(OR 3)2,COOR 3; R 1是氢,C 1 C 12 - 烷基,芳基,未取代或取代的; R 2是氢,C 1 -C 12 - 烷基,芳基,未取代或取代的; R 3是C 1 -C 12烷基,其包括使羧酰胺R 1, -CONH 2与式III的乙二醛单缩醛衍生物在式IV的羧酸R 4 -COOH的存在下反应,其中R 4 = C 1 -C 12 - 烷基,其中取代基R' 1> -R 3如上所定义。

    Preparation of acylcyclohexadionethiocarboxylic S-esters
    2.
    发明授权
    Preparation of acylcyclohexadionethiocarboxylic S-esters 失效
    ACYLCYCLOHEXADETETAHOCARBOXYLIC S-ESTERS的制备

    公开(公告)号:US5130453A

    公开(公告)日:1992-07-14

    申请号:US592298

    申请日:1990-10-03

    摘要: An acylcyclohexadionethiocarboxylic S-ester of the fomrula ##STR1## where R.sup.1 and R.sup.2 are substituted or unsubstituted alkyl, alkenyl, alkynyl, cycloalkyl, benzyl or phenyl, and R.sup.2 is additionally hydrogen, are prepared by reacting an acylcyclohexadione II ##STR2## with hydroxylamine or hydroxylamine-O-sulfonic acid in an inert solvent at from 0.degree. to 150.degree. C., to give an acylcyclohexadione compound III ##STR3## and then reacting the compound III with a mercaptan IVR.sup.2 --SH IVin the presence of an anhydrous acid HX to give an acylcyclohexadionethiocarboximidic S-ester salt V ##STR4## where X is the anion of the acid, and hydrolyzing the compounds V to the acylcyclohexadionethiocarboxylic S-ester I.

    摘要翻译: 其中R1和R2是取代或未取代的烷基,烯基,炔基,环烷基,苄基或苯基,R2另外是氢的酰基环己基二硫代羧酸S-酯通过酰基环己二酮II与 羟胺或羟胺-O-磺酸在0至150℃的惰性溶剂中反应,得到酰基环己二酮化合物III III,然后使化合物III与硫醇IV R2-SH IV在存在下反应 无水酸HX,得到酰基环己基硫代硫代卡必西酯S-酯盐V V,其中X是酸的阴离子,并将化合物V水解成酰基环己二硫代乙酸酯S酯I.

    Preparation of pyrrole and pyridine
    5.
    发明授权
    Preparation of pyrrole and pyridine 有权
    制备吡咯和吡啶

    公开(公告)号:US06538139B1

    公开(公告)日:2003-03-25

    申请号:US10234169

    申请日:2002-09-05

    IPC分类号: C07D213133

    摘要: Pyrroles of the formula (I) are prepared by dehydrogenating pyrrolidines of the formula (II) where R1 and R2, independently of one another, are hydrogen or an aliphatic radical of 1 to 6 carbon atoms, or pyridines of the formula (III) are prepared by dehydrogenating piperidines of the formula (IV) where R3, R4 and R5, independently of one another, are hydrogen or an aliphatic radical of 1 to 6 carbon atoms, in the presence of a supported noble metal catalyst, by a process in which the dehydrogenation is carried out in the presence of from 1 to 50% by weight, based on the pyrrolidine or piperidine and water, of water.

    摘要翻译: 式(I)的吡咯通过使式(II)的吡咯烷脱氢制备,其中R1和R2彼此独立地是氢或具有1至6个碳原子的脂肪族基团,或者制备式(III)的吡啶 通过使负载型贵金属催化剂存在下,式(IV)的哌啶脱氢,其中R 3,R 4和R 5彼此独立地是氢或1-6个碳原子的脂族基团,其中脱氢 在1至50重量%的存在下,基于吡咯烷或哌啶和水的水进行。

    Acylcyclohexadionethiocarboximidic S-ester salts
    6.
    发明授权
    Acylcyclohexadionethiocarboximidic S-ester salts 失效
    酰基环己基硫代硫代卡必西酯S-酯盐

    公开(公告)号:US5194650A

    公开(公告)日:1993-03-16

    申请号:US833178

    申请日:1992-02-10

    摘要: An acylcyclohexadionethiocarboxylic S-ester of the formula ##STR1## where R.sup.1 and R.sup.2 are substituted or unsubstituted alkyl, alkenyl, alkynyl, cycloalkyl, benzyl or phenyl, and R.sup.2 is additionally hydrogen, are prepared by reacting an acylcyclohexadione II ##STR2## with hydroxylamine or hydroxylamine-O-sulfonic acid in an inert solvent at from 0.degree. to 150.degree. C., to give an acylcyclohexadione compound III ##STR3## and then reacting the compound III with a mercaptan IVR.sup.2 --SH IVin the presence of an anhydrous acid HX to give an acylcyclohexadionethiocarboximidic S-ester salt V ##STR4## where X is the anion of the acid, and hydrolyzing the compounds V to the acylcyclohexadionethiocarboxylic S-ester I.

    摘要翻译: 其中R1和R2是取代或未取代的烷基,烯基,炔基,环烷基,苄基或苯基,R2另外是氢的酰基环己基二硫代羧酸S-酯通过酰基环己二酮II与 羟胺或羟胺-O-磺酸在0至150℃的惰性溶剂中反应,得到酰基环己二酮化合物III III,然后使化合物III与硫醇IV R2-SH IV在存在下反应 无水酸HX,得到酰基环己基硫代硫代卡必西酯S-酯盐V V,其中X是酸的阴离子,并将化合物V水解成酰基环己二硫代乙酸酯S酯I.