Chemical process
    2.
    发明授权
    Chemical process 有权
    化学工艺

    公开(公告)号:US07371324B2

    公开(公告)日:2008-05-13

    申请号:US10332107

    申请日:2001-06-14

    IPC分类号: B01D11/00

    摘要: A process for extracting from aqueous solution the alkali metal or ammonium salt of a phenol, naphthol, anthrol or phenanthrol or the corresponding thiol, which comprises contacting an aqueous alkaline or neutral solution of the alkali metal or ammonium salt, in which is dissolved an alkali metal or ammonium fluoride, chloride, bromide, hydroxide, nitrate, nitrite, sulphate, sulphite, sulphide, thiosulphate, phosphate, hydrogen phosphate, carbonate, bicarbonate, cyanate, cyanide, thiocyanate, borate, chlorate, chlorite, hypochlorite, perchlorate, chromate, dichromate or permanganate, with a partially water-miscible organic solvent so as to transfer aqueous solution of the alkali metal or ammonium salt of the phenol, naphthol, anthrol or phenanthrol or corresponding thiol into the solvent while retaining separate aqueous and solvent phases, and thereafter separating the solvent phase containing the alkali metal or ammonium salt and water from the aqueous phase, the ratio of solvent to water in the separated solvent phase being from 0.5:1 to 10:1 w/w.

    摘要翻译: 从水溶液中提取苯酚,萘酚,蒽或菲或其相应的硫醇的碱金属盐或铵盐的方法,该方法包括将碱金属盐或铵盐的碱性或中性水溶液与碱溶解的碱 硝酸盐,硫酸盐,硫酸盐,硫酸盐,硫酸盐,磷酸盐,磷酸盐,碳酸盐,碳酸氢盐,氰酸盐,氰化物,硫氰酸盐,硼酸盐,氯酸盐,亚氯酸盐,次氯酸盐,高氯酸盐,铬酸盐, 重铬酸盐或高锰酸盐,与部分水混溶的有机溶剂,以便将苯酚,萘酚,蒽酮或菲或菲硫醇的碱金属盐或铵盐的水溶液转移到溶剂中,同时保持分开的水相和溶剂相,之后 从水相中分离含有碱金属或铵盐和水的溶剂相,溶剂与w的比例 在分离的溶剂相中的比例为0.5:1至10:1w / w。

    Process for preparing 4,6-dichloro-pyrimidine
    3.
    发明授权
    Process for preparing 4,6-dichloro-pyrimidine 失效
    制备4,6-二氯 - 嘧啶的方法

    公开(公告)号:US6018045A

    公开(公告)日:2000-01-25

    申请号:US875896

    申请日:1997-07-17

    IPC分类号: C07D239/30

    CPC分类号: C07D239/30

    摘要: A process for preparing 4,6-dichloropyrimidine is described, comprising treating 4,6-dihydroxypyrimidine with phosphorus oxychloride in the presence of a saturated hindered amine, the hydrochloride salt of a saturated hindered amine, or an unsaturated 5-membered nitrogen containing ring or a mixture thereof, and, as a first step, directly extracting the 4,6-dichloropyrimidine so formed.

    摘要翻译: PCT No.PCT / GB96 / 00013 Sec。 371日期1997年7月17日 102(e)日期1997年7月17日PCT 1996年1月4日PCT PCT。 公开号WO96 / 23776 日本1996年8月8日描述了制备4,6-二氯嘧啶的方法,包括在饱和受阻胺的存在下,用三氯氧化磷处理4,6-二羟基嘧啶,饱和受阻胺的盐酸盐或不饱和5- 并且作为第一步,直接提取如此形成的4,6-二氯嘧啶。

    Chemical process
    6.
    发明授权
    Chemical process 失效
    化学工艺

    公开(公告)号:US6096892A

    公开(公告)日:2000-08-01

    申请号:US191491

    申请日:1998-11-13

    IPC分类号: C07D239/54 C07D239/52

    CPC分类号: C07D239/54

    摘要: A process for preparing 4,6-dihydroxypyrimidine comprising the steps:a) contacting formamide, an alkoxide of formula ROM and a malonate of formula CH.sub.2 (CO.sub.2 R).sub.2 in a solvent of formula ROH;b) adding water to the product of step (a);c) removing substantially all of the solvent of formula ROH from the product of step (b); andd) acidifying the product of step (c)wherein R is C.sub.1-4 alkyl and M is an alkali metal.

    摘要翻译: 制备4,6-二羟基嘧啶的方法,包括以下步骤:a)在式ROH的溶剂中将甲酰胺,式ROM的醇盐和式CH 2(CO 2 R)2的丙二酸酯接触) b)向步骤(a)的产物中加入水; c)从步骤(b)的产物中基本上除去所有式ROH的溶剂; 和d)酸化步骤(c)的产物,其中R是C 1-4烷基,M是碱金属。

    Process for the preparation of pyrimidine compounds
    8.
    发明授权
    Process for the preparation of pyrimidine compounds 有权
    嘧啶化合物的制备方法

    公开(公告)号:US6162916A

    公开(公告)日:2000-12-19

    申请号:US242429

    申请日:1999-02-16

    IPC分类号: C07D239/34

    CPC分类号: C07D239/34

    摘要: A process for preparing agrochemical intermediates of formula (I), wherein W is (CH.sub.3 O).sub.2 CH.CHCO.sub.2 CH.sub.3 or CH.sub.3 O.CH.dbd.CCO.sub.2 CH.sub.3 ; Z.sup.1 is a halogen atom; and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently hydrogen, halogen, C.sub.1-4 alky, C alkoxy, acetoxy or acyl; the process comprising the steps of: (a) reacting a compound of formula (II), wherein X, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined above, with a compound of formula ROCH.sub.3, wherein R is a metal; and, (b) reacting the product of (a) with a compound of formula (III), wherein Z.sup.1 and Z.sup.2 are halogen atoms. A process for the preparation of compounds of formula (II) and compounds of formula (II) themselves. A process for obtaining, in substantially pure form, a compound of formula (11) and compounds of formula (II) themselves. A process for obtaining, in substantially pure form, a compound of formula (11) wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are all hydrogen.

    摘要翻译: PCT No.PCT / GB97 / 02015 Sec。 371日期1999年2月16日 102(e)1999年2月16日PCT 1997年7月25日PCT公布。 公开号WO98 / 07707 日期:1998年2月26日制备式(I)的农药中间体的方法,其中W是(CH 3 O)2 CH.CHCO 2 CH 3或CH 3 O,CH = CCO 2 CH 3; Z1是卤原子; 且R 1,R 2,R 3和R 4独立地为氢,卤素,C 1-4烷基,C烷氧基,乙酰氧基或酰基; 该方法包括以下步骤:(a)将其中X,R 1,R 2,R 3和R 4如上定义的式(II)化合物与式ROCH 3的化合物反应,其中R是金属; 和(b)使(a)的产物与式(III)的化合物反应,其中Z 1和Z 2是卤素原子。 制备式(II)化合物和式(II)化合物本身的方法。 以基本上纯的形式获得式(11)化合物和式(II)化合物本身的方法。 以基本上纯的形式获得其中R 1,R 2,R 3和R 4全部为氢的式(11)化合物的方法。