Neutralization of isophorone nitrile synthesis products
    3.
    发明申请
    Neutralization of isophorone nitrile synthesis products 失效
    异佛尔酮腈合成产物的中和

    公开(公告)号:US20060058544A1

    公开(公告)日:2006-03-16

    申请号:US10539134

    申请日:2003-12-16

    IPC分类号: C07C253/08

    摘要: The present invention relates to a process for preparing 3-cyano-3,5,5-trimethylcyclohexanone (isophoronenitrile) by reacting isophorone with hydrogen cyanide in the presence of a base as a catalyst to obtain a crude isophoronenitrile product, and subsequently distilling the crude isophoronenitrile product, with the addition before distillation of at least one specific sulfonic acid or specific carboxylic acid. In addition, the present invention relates to the use of a specific sulfonic acid or of a specific carboxylic acid as a neutralizing agent before distillation of a crude isophoronenitrile product which has been obtained by reacting isophorone with hydrogen cyanide in the presence of a base as a catalyst, in order to avoid precipitates in the neutralization of the base used as a catalyst with an acid.

    摘要翻译: 本发明涉及一种在碱作催化剂存在下使异佛尔酮与氰化氢反应来制备3-氰基-3,5,5-三甲基环己酮(异佛尔酮)的方法,得到粗异烟酰腈产物,然后蒸馏粗产物 异佛尔酮腈产物,在蒸馏前加入至少一种特定的磺酸或特定的羧酸。 此外,本发明涉及在蒸馏前的异丙醇腈产物时使用特定的磺酸或特定羧酸作为中和剂,所述产物是通过在碱存在下将异佛尔酮与氰化氢反应而得到的 催化剂,以避免在用酸作为催化剂的碱的中和中沉淀。

    Process for the preparation of 3-amino-2-hydroxy-4-phenylbutyronitrile
derivatives
    6.
    发明授权
    Process for the preparation of 3-amino-2-hydroxy-4-phenylbutyronitrile derivatives 失效
    3-氨基-2-羟基-4-苯基丁腈衍生物的制备方法

    公开(公告)号:US5834618A

    公开(公告)日:1998-11-10

    申请号:US994448

    申请日:1997-12-19

    CPC分类号: C07C253/00 Y02P20/55

    摘要: 3-Amino-2-hydroxy-4-phenylbutyronitrile derivatives represented by the formula (3) may be prepared by reacting an aminoaldehyde derivative represented by the formula (1) with a cyanohydrin derivative represented by the formula (2) in the presence of a metallic compound, base, or acid; ##STR1## wherein R.sup.1 and R.sup.2 each independently represents a hydrogen atom or a protective group for an amino group, R.sup.3 and R.sup.4 each represents an alkyl or cycloalkyl group or R.sup.3 and R.sup.4 together form a tetramethylene or pentamethylene group.

    摘要翻译: 由式(3)表示的3-氨基-2-羟基-4-苯基丁腈衍生物可以通过使由式(1)表示的氨基醛衍生物与式(2)表示的氰醇衍生物在 金属化合物,碱或酸; (3)其中R1和R2各自独立地表示氢原子或氨基的保护基,R3和R4各自表示烷基或环烷基或R3和 R4一起形成四亚甲基或五亚甲基。

    Catalyst for asymmetric induction
    8.
    发明授权
    Catalyst for asymmetric induction 失效
    非对称诱导催化剂

    公开(公告)号:US5288682A

    公开(公告)日:1994-02-22

    申请号:US851285

    申请日:1992-03-12

    摘要: Optically active cyanohydrins are prepared by addition of hydrogen cyanide to aldehydes in the presence of catalysts which comprise the dipeptide derivative represented by the formula ##STR1## wherein R.sup.1 represents an isopropyl group, an isobutyl group, a sec-butyl group, a tert-butyl group, a methyl group, a benzyl group or a phenyl group, R.sup.2 represents a benzyl group, an indol-3-ylmethyl group, an isopropyl group, an isobutyl group or a phenyl group, R.sup.3 represents a lower alkoxy group, a hydroxy group or a mono- or di-lower alkylamino group, R.sup.4 represents a hydrogen atom, or R.sup.2 and R.sup.4 are bonded together at their terminals to form a CH.sub.2 CH.sub.2 CH.sub.2 group, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 are the same or different, and each represents a hydrogen atom, a halogen atom, a lower alkyl group or a lower alkoxy group or R.sup.5 and R.sup.6, R.sup.6 and R.sup.7, or R.sup.7 and R.sup.8 are bonded together at their terminals to form CH.dbd.CH--CH.dbd.CH or OCH.sub.2 O, and * denotes an absolute configuration of S or R, and a titanium (IV) alkoxide.

    摘要翻译: 通过在催化剂存在下,将氰化氢加入到醛中来制备光活性氰醇,该催化剂包含由式(* CHEMICAL STRUCTURE *)(I)表示的二肽衍生物,其中R 1表示异丙基,异丁基,仲丁基 基团,叔丁基,甲基,苄基或苯基,R 2表示苄基,吲哚-3-基甲基,异丙基,异丁基或苯基,R 3表示低级 烷氧基,羟基或单 - 或二 - 低级烷基氨基,R 4表示氢原子,或者R 2和R 4在其末端键合在一起形成CH 2 CH 2 CH 2基,R 5,R 6,R 7和R 8相同, 各自表示氢原子,卤素原子,低级烷基或低级烷氧基或R5和R6,R6和R7,或R7和R8在其末端键合在一起形成CH = CH-CH = CH 或OCH 2 O,*表示S或R的绝对构型,钛(IV) 醇盐

    Process for producing mandelonitrile compound
    9.
    发明授权
    Process for producing mandelonitrile compound 有权
    制备扁桃腈化合物的方法

    公开(公告)号:US09126900B2

    公开(公告)日:2015-09-08

    申请号:US14110940

    申请日:2012-03-26

    申请人: Tatsuya Toriumi

    发明人: Tatsuya Toriumi

    摘要: A process for producing a mandelonitrile compound represented by the following formula (2), comprising a step of reacting a benzaldehyde compound represented by the following formula (1) with at least one member selected from the group consisting of metal cyanides and hydrogen cyanide in the presence of a phase transfer catalyst in a solvent.

    摘要翻译: 一种制备由下式(2)表示的扁桃腈化合物的方法,包括使下式(1)表示的苯甲醛化合物与选自金属氰化物和氰化氢中的至少一种在 在溶剂中存在相转移催化剂。

    Process for the Preparation of Dinitriles
    10.
    发明申请
    Process for the Preparation of Dinitriles 有权
    制备二腈的方法

    公开(公告)号:US20070260086A1

    公开(公告)日:2007-11-08

    申请号:US10556629

    申请日:2004-05-07

    IPC分类号: C07C253/08

    摘要: The present invention relates to a process for the preparation of dinitriles by hydrocyanation of unsaturated nitrile compounds in the presence of a catalyst based on a metal element in the zero oxidation state and on organophosphorus ligands;the invention relates more particularly to a process for the recovery from the hydrocyanation medium of a catalyst for the hydrocyanation of unsaturated nitrites to dinitriles. It consists in controlling the concentration of unsaturated nitrites in the reaction medium resulting from the hydrocyanation reaction in order to obtain a concentration by weight of unsaturated nitrites of less than 20% in the said medium, and in then feeding the said medium to a stage of settling into two upper and lower phases. The lower phase comprises most of the catalytic system, while the upper phase is composed essentially of the dinitriles.

    摘要翻译: 本发明涉及一种通过在基于零氧化态的金属元素和有机磷配体的催化剂存在下,通过不饱和腈化合物的氢氰化来制备二腈的方法;本发明更具体地涉及一种回收方法 来自用于将不饱和亚硝酸盐氢化成二腈的催化剂的氢化细胞培养基。 它包括控制由氢氰化反应产生的反应介质中的不饱和亚硝酸盐的浓度,以便在所述介质中获得小于20%的不饱和亚硝酸盐的重量浓度,然后将所述介质供给到 沉入两个上下相。 较低的相包含大部分催化体系,而上部相基本上由二腈组成。