Process of producing 2-cyano-4-oxo-4H-benzopyran compounds
    3.
    发明授权
    Process of producing 2-cyano-4-oxo-4H-benzopyran compounds 失效
    制备2-氰基-4-氧代-4H-苯并吡喃化合物的方法

    公开(公告)号:US5659051A

    公开(公告)日:1997-08-19

    申请号:US273119

    申请日:1994-07-11

    IPC分类号: C07D311/24

    CPC分类号: C07D311/24

    摘要: There is disclosed a process of producing a 2-cyano-4-oxo-4H-benzopyran compound of the general formula (2): ##STR1## wherein R.sup.1 and R.sup.2 are independently hydrogen, halogen, hydroxy, C.sub.1 -C.sub.5 alkyl, C.sub.1 -C.sub.5 alkoxy, nitro or a group of the RCONH wherein R is C.sub.1 -C.sub.20 alkyl, phenyl, phenyl-substituted (C.sub.1 -C.sub.20) alkyl, phenyl (C.sub.1 -C.sub.20)alkoxyphenyl or (C.sub.1 -C.sub.20) alkoxyphenyl. This production process is characterized in that a carboxamide of the general formula (1): ##STR2## wherein R.sup.1 and R.sup.2 are each as defined above, is reacted with a dehydrating agent in the presence of a pyridine compound of the general formula (4): ##STR3## wherein A.sup.1 and A.sup.2 are independently hydrogen or C.sub.1 -C.sub.5 alkyl. If the final product cannot be obtained as crystals having good filtration properties by ordinary treatments, a novel technique as disclosed herein can provide such crystals by dissolving the reaction product in an organic solvent insoluble or slightly soluble in water; pouring the resultant solution into water; and removing the organic solvent by distillation with stirring to effect the crystallization of the final product.

    摘要翻译: 公开了通式(2)的2-氰基-4-氧代-4H-苯并吡喃化合物的制备方法:其中R 1和R 2独立地是氢,卤素,羟基,C 1 -C 5烷基 硝基或其中R为C 1 -C 20烷基,苯基,苯基取代的(C 1 -C 20)烷基,苯基(C 1 -C 20)烷氧基苯基或(C 1 -C 20)烷氧基苯基)的RCONH基团。 该制造方法的特征在于通式(1)的羧酰胺:其中R 1和R 2各自如上所定义,与脱水剂在通式(Ⅴ)的吡啶化合物存在下反应, (4):其中A1和A2独立地为氢或C1-C5烷基。 如果通过常规处理不能获得具有良好过滤性能的结晶的最终产品,则本文公开的新技术可以通过将反应产物溶解在不溶或微溶于水的有机溶剂中来提供这种晶体; 将所得溶液倒入水中; 并在搅拌下通过蒸馏除去有机溶剂以实现最终产物的结晶。

    Production process and intermediate of tetrazole compound
    4.
    发明授权
    Production process and intermediate of tetrazole compound 失效
    四唑化合物的生产工艺和中间体

    公开(公告)号:US06191289B1

    公开(公告)日:2001-02-20

    申请号:US09176198

    申请日:1998-10-21

    IPC分类号: C07D25704

    摘要: There are disclosed an industrially favorable process for producing a tetrazole compound of general formula (1): characterized in that a nitrile of general formula (2): R1CN  (2) is reacted with hydrazine or a salt thereof in the presence of a catalyst, followed by reaction with a nitrous acid compound of general formula (3): ANO2  (3) or a nitrile of general formula (2) is reacted with hydrogen sulfide, followed by reaction with an alkyl halide of general formula (4): R4J  (4) with hydrazine or a salt thereof, and then with a nitrous acid compound of general formula (3); and an intermediate of general formula (5): R1C(═R5)R6  (5) which is useful for the production of the tetrazole compound (in which R1 to R6, A and J in the above formulas are as defined in the specification).

    摘要翻译: 公开了用于制备通式(1)的四唑化合物的工业上有利的方法:其特征在于通式(2)的腈与肼或其盐在催化剂存在下反应,然后与 将通式(3)的亚硝酸化合物或通式(2)的腈与硫化氢反应,然后与通式(4)的烷基卤反应:与肼或其盐反应,然后与 通式(3)的亚硝酸化合物; 和通式(5)的中间体:其可用于制备四唑化合物(其中上述式中的R 1至R 6,A和J如说明书中所定义)。

    Production process and intermediate of tetrazole compound
    5.
    发明授权
    Production process and intermediate of tetrazole compound 失效
    四唑化合物的生产工艺和中间体

    公开(公告)号:US5874593A

    公开(公告)日:1999-02-23

    申请号:US592375

    申请日:1996-02-08

    摘要: There are disclosed an industrially favorable process for producing a tetrazole compound of general formula (1): ##STR1## characterized in that a nitrile of general formula (2):R.sup.1 CN (2)is reacted with hydrazine or a salt thereof in the presence of a catalyst, followed by reaction with a nitrous acid compound of general formula (3):ANO.sub.2 (3)or a nitrile of general formula (2) is reacted with hydrogen sulfide, followed by reaction with an alkyl halide of general formula (4):R.sup.4 J (4)with hydrazine or a salt thereof, and then with a nitrous acid compound of general formula (3); and an intermediate of general formula (5):R.sup.1 C(=R.sup.5)R.sup.6 (5)which is useful for the production of the tetrazole compound (in which R.sup.1 to R.sup.6, A and J in the above formulas are as defined in the specification).

    摘要翻译: PCT No.PCT / JP95 / 00919 Sec。 371日期1996年2月8日 102(e)日期1996年2月8日PCT提交1995年5月15日PCT公布。 出版物WO95 / 31445 日本公开了1995年11月23日的通式(1)的四唑化合物的工业上有利的方法:其中通式(2)的腈:R1CN(2)与肼 或其盐在催化剂存在下反应,随后与通式(3)的亚硝酸化合物:ANO2(3)或通式(2)的腈反应与硫化氢反应,随后与 通式(4)的烷基卤化物:R4J(4)与肼或其盐,然后与通式(3)的亚硝酸化合物反应; 和通式(5)的中间体:可用于制备四唑化合物的R1C(= R5)R6(5)(上述式中的R1至R6,A和J如说明书中所定义) 。

    Production of mixed acid anhydride and amide compound
    7.
    发明授权
    Production of mixed acid anhydride and amide compound 失效
    混合酸酐和酰胺化合物的生产

    公开(公告)号:US06753431B2

    公开(公告)日:2004-06-22

    申请号:US09870676

    申请日:2001-06-01

    IPC分类号: C07D21122

    摘要: There is disclosed an advantageous mixed acid anhydride production method of formula (1): R1C(O)OY(O)n(R2)p  (1) wherein R1, R2 and Y denote the same as defined below, n and p denote an integer of 1 or 2, which is characterized by adding a carboxylic acid of formula (2); R1COOH  (2) wherein R1 denotes a hydrogen atom, an optionally substituted alkyl group or the like, an organic base to a solution of a carboxylic acid activating agent of formula (3); (R2)pY(O)nX  (3) wherein R2 denotes an optionally substituted aliphatic hydrocarbyl group or the like, Y denotes a carbon atom, a phosphorus atom, or a sulfur atom, and X denotes a chlorine atom or the like.

    摘要翻译: 公开了式(1)的有利的混合酸酐的制备方法:其中R 1,R 2和Y表示与下面定义的相同,n和p表示1或2的整数,其特征在于 加入式(2)的羧酸;其中R 1表示氢原子,任选取代的烷基等,式(3)的羧酸活化剂的溶液中的有机碱:其中R 1, 2>表示任选取代的脂族烃基等,Y表示碳原子,磷原子或硫原子,X表示氯原子等。

    Process for producing optically active azetidine-2-carboxylic acid
    8.
    发明授权
    Process for producing optically active azetidine-2-carboxylic acid 有权
    光学活性氮杂环丁烷-2-羧酸的制备方法

    公开(公告)号:US6114543A

    公开(公告)日:2000-09-05

    申请号:US128974

    申请日:1998-08-04

    IPC分类号: C07D205/04

    CPC分类号: C07D205/04

    摘要: The present invention provides a process for preparing optically active azetidine-2-carboxylic acids using readily available reagents of relatively low price in the industry. Thus, there is provided optically active azetidine-2-carboxylic acid, and a process for producing the same by subjecting optically active N-(alkylbenzyl)azetidine-2-carboxylic acid represented by the formula (1): ##STR1## to hydrogenolysis in the presence of a catalyst.

    摘要翻译: 本发明提供了使用工业中价格相对较低的容易获得的试剂制备光学活性氮杂环丁烷-2-羧酸的方法。 因此,提供光学活性的氮杂环丁烷-2-羧酸及其制备方法,其中式(1)表示的光学活性的N-(烷基苄基)氮杂环丁烷-2-羧酸:在 催化剂

    Production Method of Polycyclic Lactams
    9.
    发明申请
    Production Method of Polycyclic Lactams 审中-公开
    多环内酰胺的生产方法

    公开(公告)号:US20090118519A1

    公开(公告)日:2009-05-07

    申请号:US12297113

    申请日:2006-06-28

    IPC分类号: C07D209/48

    CPC分类号: C07D209/48 C07D209/52

    摘要: A process for producing lactams of formula (1) below, including the step of reacting lactones of formula (2) below with imides of any of formulae (3a), (3b) and (3c) to thereby obtain corresponding carboxylic acids (step A); the step of esterifying the carboxylic acids into corresponding esters (step B); and the step of reacting the esters with amines to thereby obtain lactams of the formula (1) (step C). In the formulae (1)-(2) and (3a)-(3c), when R3 and R4 are simultaneously hydrogen atoms, R is a substituted methylene or optionally substituted polymethylene; when at least one of R3 and R4 is a substituent other than hydrogen atom, R is an optionally substituted methylene or polymethylene; each of R3, R4, R5 and R6 independently is a hydrogen atom, a halogen atom, cyano, etc.; each of A1, A2, A3, A4, A5, A6, A7, A8, A9 and A10 independently is a hydrogen atom, a halogen atom, nitro, etc.; and M is a hydrogen atom or an alkali metal atom.

    摘要翻译: 一种生产下式(1)的内酰胺的方法,包括使下式(2)的内酯与式(3a),(3b)和(3c)中任一式的酰亚胺反应的步骤,从而得到相应的羧酸(步骤A ); 将羧酸酯化成相应的酯(步骤B)的步骤; 以及使酯与胺反应从而得到式(1)的内酰胺(步骤C)的步骤。 在式(1) - (2)和(3a) - (3c)中,当R3和R4同时为氢原子时,R为取代的亚甲基或任选取代的聚亚甲基; 当R 3和R 4中的至少一个是除氢原子以外的取代基时,R是任选取代的亚甲基或聚亚甲基; R 3,R 4,R 5和R 6各自独立地为氢原子,卤原子,氰基等; A1,A2,A3,A4,A5,A6,A7,A8,A9和A10各自独立地为氢原子,卤素原子,硝基等; M是氢原子或碱金属原子。