Synthesis of N-(4-fluorophenyl)-2-hydroxy-N-(1-methylethyl)acetamide
using sodium formate
    1.
    发明授权
    Synthesis of N-(4-fluorophenyl)-2-hydroxy-N-(1-methylethyl)acetamide using sodium formate 失效
    使用甲酸钠合成N-(4-氟苯基)-2-羟基-N-(1-甲基乙基)乙酰胺

    公开(公告)号:US5808152A

    公开(公告)日:1998-09-15

    申请号:US989565

    申请日:1997-12-12

    CPC分类号: C07C231/12

    摘要: The present invention relates to a process for making N-(4-fluorophenyl)-2-hydroxy-N-(1-methylethyl)acetamide. The process includes the steps of (a) reacting 2-chloro-N-(4-fluorophenyl)-N-(1-methylethyl)acetamide with sodium formate to form a reaction mixture that contains N-(4-fluorophenyl)-2-hydroxy-N-(1-methylethyl)acetamideformate; (b) adding an aprotic, aromatic solvent to the reaction mixture; (c) hydrolyzing the N-(4-fluorophenyl)-2-hydroxy-N-(1-methylethyl)acetamideformate in the reaction mixture and (d) recovering N-(4-fluorophenyl)-2-hydroxy-N-(1-methylethyl)acetamide from the organic phase.

    摘要翻译: 本发明涉及制备N-(4-氟苯基)-2-羟基-N-(1-甲基乙基)乙酰胺的方法。 该方法包括以下步骤:(a)使2-氯-N-(4-氟苯基)-N-(1-甲基乙基)乙酰胺与甲酸钠反应,形成含有N-(4-氟苯基)-2- 羟基-N-(1-甲基乙基)乙酰氨基甲酸酯; (b)向反应混合物中加入非质子芳族溶剂; (c)在反应混合物中水解N-(4-氟苯基)-2-羟基-N-(1-甲基乙基)乙酰胺,和(d)回收N-(4-氟苯基)-2-羟基-N-(1 - 甲基乙基)乙酰胺。

    Process for the manufacture of thiophosphoryl chloride
    3.
    发明授权
    Process for the manufacture of thiophosphoryl chloride 失效
    制备硫代磷酰氯的方法

    公开(公告)号:US06251350B1

    公开(公告)日:2001-06-26

    申请号:US09337088

    申请日:1999-06-21

    IPC分类号: C01B2510

    CPC分类号: C01B25/10

    摘要: The present invention relates to an improved process for the preparation of thiophosphoryl chloride which is useful as an intermediate for the synthesis of insecticidally active compounds. The improvement comprises the presence in the reaction mixture of a catalytic amount of a nitroxide free radical of the following general formula: wherein R1, R2, R3 and R4 represent an alkyl group.

    摘要翻译: 本发明涉及一种制备硫代磷酰氯的改进方法,其可用作合成杀虫活性化合物的中间体。 改进包括在反应混合物中存在催化量的以下通式的氮氧自由基:其中R1,R2,R3和R4表示烷基。

    Process for making
N-(4-fluorophenyl)-N-(1-methylethyl)-2-�(5-trifuloromethyl)-1,3,4-thiadi
azol-2-yl)oxy!acetamide using an aprotic, aromatic solvent
    4.
    发明授权
    Process for making N-(4-fluorophenyl)-N-(1-methylethyl)-2-�(5-trifuloromethyl)-1,3,4-thiadi azol-2-yl)oxy!acetamide using an aprotic, aromatic solvent 失效
    使用非质子芳族溶剂制备N-(4-氟苯基)-N-(1-甲基乙基)-2 - [(5-三氟甲基)-1,3,4-噻二唑-2-基)氧基]乙酰胺的方法

    公开(公告)号:US5895818A

    公开(公告)日:1999-04-20

    申请号:US989597

    申请日:1997-12-12

    CPC分类号: C07D285/12

    摘要: The present invention relates to a process for making N-(4-fluorophenyl)-N-(1-methylethyl)-2-�(5-trifluoromethyl)-1,3,4-thiadiazol-2-yl)oxy!acetamide in an aprotic, aromatic solvent. The process includes the steps of: (a) reacting 2-(methylsulfonyl)-5-(trifluoromethyl)-1,3,4-thiadiazole with N-(4-fluorophenyl)-2-hydroxy-N-(1-methylethyl)acetamide in the presence of an aprotic, aromatic solvent to form an aqueous phase and an organic phase; (b) acidifying the phases, (c) separating the phases; and (d) recovering the N-(4-fluorophenyl)-N-(1-methylethyl)-2-�(5-trifluoromethyl)-1,3,4-thiadiazol-2-yl)oxy!acetamide from the organic phase.

    摘要翻译: 本发明涉及制备N-(4-氟苯基)-N-(1-甲基乙基)-2 - [(5-三氟甲基)-1,3,4-噻二唑-2-基)氧基]乙酰胺的方法 非质子,芳香族溶剂。 该方法包括以下步骤:(a)使2-(甲基磺酰基)-5-(三氟甲基)-1,3,4-噻二唑与N-(4-氟苯基)-2-羟基-N-(1-甲基乙基) 乙酰胺在非质子芳香族溶剂的存在下形成水相和有机相; (b)使相酸化,(c)分离相; 和(d)从有机相中回收N-(4-氟苯基)-N-(1-甲基乙基)-2 - [(5-三氟甲基)-1,3,4-噻二唑-2-基)氧基]乙酰胺 。

    Process for producing
N-(4-fluorophenyl)-N-(1-methylethyl)-2-�(5-trifluoromethyl-1,3,4-thiadia
zol-2-yl)oxy!acetamide
    6.
    发明授权
    Process for producing N-(4-fluorophenyl)-N-(1-methylethyl)-2-�(5-trifluoromethyl-1,3,4-thiadia zol-2-yl)oxy!acetamide 失效
    制备N-(4-氟苯基)-N-(1-甲基乙基)-2 - [(5-三氟甲基-1,3,4-噻二唑-2-基)氧基]乙酰胺的方法

    公开(公告)号:US5792872A

    公开(公告)日:1998-08-11

    申请号:US989564

    申请日:1997-12-12

    CPC分类号: C07D285/13

    摘要: The present invention relates to a process for making N-(4-fluorophenyl)-N-(1-methylethyl)-2-�(5-(trifluoromethyl)-1,3,4-thiadiazol-2-yl)oxy!acetamide, which process includes the steps of reacting 2-(methylsulfonyl)-5-(trifluoromethyl)-1,3,4,-thiadiazole with N-(4-fluorophenyl)-2-hydroxy-N(1-methylethyl)acetamide in an aprotic, aromatic solvent with aqueous alkali to form an aqueous phase and an organic phase, separating the aqueous and organic phases and recovering the N-(4-fluorophenyl)-N-(1-methylethyl)-2-�(5-(trifluoromethyl)-1,3,4-thiadiazol-2-yl)oxy!acetamide from the organic phase. A preferred solvent and aqueous alkali are toluene and aqueous sodium hydroxide, respectively.

    摘要翻译: 本发明涉及制备N-(4-氟苯基)-N-(1-甲基乙基)-2 - [(5-(三氟甲基)-1,3,4-噻二唑-2-基)氧基]乙酰胺 ,该方法包括使2-(甲基磺酰基)-5-(三氟甲基)-1,3,4, - 噻二唑与N-(4-氟苯基)-2-羟基-N(1-甲基乙基)乙酰胺反应的步骤 非质子芳族溶剂与水溶液形成水相和有机相,分离水相和有机相,并回收N-(4-氟苯基)-N-(1-甲基乙基)-2 - [(5-(三氟甲基) )-1,3,4-噻二唑-2-基)氧基]乙酰胺。 优选的溶剂和碱水溶液分别是甲苯和氢氧化钠水溶液。

    Process for preparing substituted oxadiazolones
    7.
    发明授权
    Process for preparing substituted oxadiazolones 失效
    取代的恶二唑酮的制备方法

    公开(公告)号:US5756752A

    公开(公告)日:1998-05-26

    申请号:US842585

    申请日:1997-04-15

    CPC分类号: C07D271/113 C07C241/04

    摘要: Substituted oxadiazolones of the formula (I) ##STR1## in which R represents optionally substituted alkyl, are obtained in good yields and high purity on reacting in a first step carboxylic acids of the general formula (II) R--COOH (II) with hydrazine hydrate in the presence of a catalyst and an inert diluent at temperatures between 0.degree. C. and 150.degree. C. with elimination of water and removal of said catalyst and reacting the resulting carboxylic hydrazides of the general formula (III) R--CO--NH--NH.sub.2 (III) in a second step with phosgene (COCl.sub.2) at temperatures between 20.degree. C. and 120.degree. C.

    摘要翻译: 在通式(II)中,R-COOH(II)的第一步羧酸反应获得式(I)的取代的恶二唑酮,其中R表示任选取代的烷基,产率高,纯度高 )与肼水合物在催化剂和惰性稀释剂存在下,在0℃至150℃之间的温度下,除去水并除去所述催化剂,并使所得的通式(III)的羧酰肼与R- CO-NH-NH 2(III)在第二步中与光气(COCl 2)在20℃至120℃之间。