Process for producing 1H-3-aminopyrrolidine and derivatives thereof
    2.
    发明授权
    Process for producing 1H-3-aminopyrrolidine and derivatives thereof 失效
    制备1H-3-氨基吡咯烷及其衍生物的方法

    公开(公告)号:US06531594B2

    公开(公告)日:2003-03-11

    申请号:US09933007

    申请日:2001-08-21

    IPC分类号: C07D47720

    摘要: A process for producing 1H-3-aminopyrrolidine and derivatives thereof is disclosed. The process is especially useful for producing optically active 1H-3-aminopyrrolidine and derivatives thereof and in this case comprises reacting an optically active amino-protected aspartic anhydride represented by the formula (1) with a primary amine represented by the formula R′NH2, subjecting the reaction product to cyclodehydration to obtain an optically active 1-aralkyl-3-(protected amino)pyrrolidine-2,5-dione compound represented by the formula (2), subsequently eliminating the protective group from the 3-position amino group of the compound represented by the formula (2) to obtain an optically active 1-aralkyl-3-aminopyrrolidine-2,5-dione compound represented by the formula (3), reducing the carbonyl groups of the compound represented by the formula (3) to obtain either an optically active 1-aralkyl-3-aminopyrrolidine compound represented by the formula (4) or a salt thereof with a protonic acid, and then subjecting the compound represented by the formula (4) or the salt thereof to hydrogenolysis to obtain an optically active 1H-3-aminopyrrolidine or a protonic acid salt thereof.

    摘要翻译: 公开了一种制备1H-3-氨基吡咯烷及其衍生物的方法。 该方法对于制备光学活性的1H-3-氨基吡咯烷及其衍生物特别有用,在这种情况下,包括将由式(1)表示的光学活性的氨基保护的天冬氨酸酐与由式R'NH 2表示的伯胺反应, 使反应产物进行环化脱水,得到由式(2)表示的光学活性1-芳烷基-3-(保护氨基)吡咯烷-2,5-二酮化合物,随后从3-位氨基 由式(2)表示的化合物,得到由式(3)表示的光学活性1-芳烷基-3-氨基吡咯烷-2,5-二酮化合物,还原由式(3)表示的化合物的羰基, 得到由式(4)表示的光学活性1-芳烷基-3-氨基吡咯烷化合物或其盐与质子酸反应,然后使由式(4)表示的化合物或其盐 f进行氢解以获得光学活性的1H-3-氨基吡咯烷或其质子酸盐。

    Modified ion exchange resins and use thereof
    3.
    发明授权
    Modified ion exchange resins and use thereof 失效
    改性离子交换树脂及其用途

    公开(公告)号:US5589517A

    公开(公告)日:1996-12-31

    申请号:US417763

    申请日:1995-04-06

    摘要: A modified strongly acidic ion exchange resin of a sulfonic acid type is disclosed. Modification is conducted by ionically binding a particular N,N-di-substituted mercaptoalkylamine to a strongly acidic ion exchange resin of a sulfonic acid type. The N,N-di-substituted mercaptoalkylamine is specifically represented by the following formulae: ##STR1## wherein R.sup.1 represents hydrogen or a C.sub.1-6 alkyl group, R.sup.2 and R.sup.3 independently represent a C.sub.1-10 alkyl group, a and b denote 0-3, respectively, a+b denotes 2 or 3, and m denotes 4 or 5. The modified ion exchange resin makes an improved catalyst in the preparation of a bisphenol by the condensation reaction of a phenol with a ketone.

    摘要翻译: 公开了一种磺酸型改性强酸性离子交换树脂。 通过将特定的N,N-二取代的巯基烷基胺与磺酸型的强酸性离子交换树脂离子结合来进行改性。 N,N-二取代的巯基烷基胺具体由下式表示:其中R1表示氢或C1-6烷基,R2和R3独立地表示C1-10 烷基,a和b分别表示0-3,a + b表示2或3,m表示4或5.改性离子交换树脂通过苯酚的缩合反应制备双酚的改进催化剂 用酮。

    Phenoxymethylpyrimidine derivative and use thereof as herbicide
    4.
    发明授权
    Phenoxymethylpyrimidine derivative and use thereof as herbicide 失效
    苯氧甲基嘧啶衍生物及其作为除草剂的用途

    公开(公告)号:US5468721A

    公开(公告)日:1995-11-21

    申请号:US140062

    申请日:1993-10-29

    摘要: A phenoxymethylpyrimidine derivative represented by the general formula (1) ##STR1## and a herbicide containing it as an effective ingredient. This compound has a high weed killing effect, a wide weed killing spectrum and high safety on crops, and is thus useful as a herbicide.whereinX denotes a halogen atom, a lower alkyl group, a lower alkoxy group, a lower acyloxy group or a nitro group,n denotes an integer of 0, 1 or 2,Y denotes a hydrogen atom, a lower alkyl group, a lower alkenyl group, a lower alkynyl group, a substituted lower alkyl group, a substituted lower alkenyl group, a substituted lower alkynyl group, an alkali metal atom, an alkaline earth metal atom or an ammonium cation optionally substituted by alkyl group(s), andR.sup.1 and R.sup.2 each independently denote a lower alkyl group.

    摘要翻译: PCT No.PCT / JP92 / 00560 Sec。 371日期:1993年10月29日 102(e)日期1993年10月29日PCT提交1992年4月28日PCT公布。 WO92 / 19603 PCT出版物 1992年12月11日,由通式(1)表示的苯氧基甲基嘧啶衍生物(1)和含有它作为有效成分的除草剂。 这种化合物具有高杂草杀灭效果,宽杂草杀虫谱和作物高安全性,因此可用作除草剂。 其中X表示卤素原子,低级烷基,低级烷氧基,低级酰氧基或硝基,n表示0,1或2的整数,Y表示氢原子,低级烷基,低级 烯基,低级炔基,取代的低级烷基,取代的低级烯基,取代的低级炔基,碱金属原子,碱土金属原子或任选被烷基取代的铵阳离子,以及 R1和R2各自独立地表示低级烷基。