Process for the preparation of alkylhydroxyanilinothiotriazine
derivatives
    1.
    发明授权
    Process for the preparation of alkylhydroxyanilinothiotriazine derivatives 失效
    制备烷基羟基苯甲酸衍生物衍生物的方法

    公开(公告)号:US5086173A

    公开(公告)日:1992-02-04

    申请号:US699067

    申请日:1991-05-13

    IPC分类号: C07D251/46 C08K5/37

    CPC分类号: C07D251/46

    摘要: A process for the preparation of compounds of formula I ##STR1## wherein R.sub.1 and R.sub.2 are each independently of the other hydrogen, C.sub.1 -C.sub.12 alkyl, C.sub.5 -C.sub.6 cycloalkyl or phenyl, and R.sub.3 and R.sub.4 are each independently of the other C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.6 cycloalkyl, phenyl, phenyl which is substituted by C.sub.1 -C.sub.6 alkyl and/or hydroxy, or phenyl-C.sub.1 -C.sub.4 alkyl. The process comprises reacting a compound of formula III ##STR2## with a nitrite in aqueous or aqueous/organic medium to a compound of formula II ##STR3## extracting said compound of formula II from the reaction solution with a solvent, hydrogenating said compound, without isolation, in the cited solvent and in the presence of a palladium catalyst, to the corresponding p-aminophenol, and reacting said aminophenol, without isolation, with cyanuric chloride and a compound of formula HSR.sub.3 or HSR.sub.4 or a mixture of compounds of formulae HSR.sub.3 and HSR.sub.4. The products are obtained in high yield and purity.

    摘要翻译: 制备式I化合物的方法(I)其中R 1和R 2各自独立于其它的氢,C 1 -C 12烷基,C 5 -C 6环烷基或苯基,且R 3和R 4各自独立地为其它的C1- C 1 -C 6烷基,C 5 -C 6环烷基,苯基,被C 1 -C 6烷基和/或羟基取代的苯基或苯基-C 1 -C 4烷基。 该方法包括使式III化合物(III)与水性或水/有机介质中的亚硝酸盐反应到式II化合物(II),用溶剂从反应溶液中提取所述式II化合物 在所述溶剂中并在钯催化剂存在下,将所述化合物氢化为相应的对氨基苯酚,并将所述氨基苯酚与氰尿酰氯和式HSR3或HSR4的化合物或其混合物 的式HSR3和HSR4的化合物。 以高产率和纯度获得产品。

    Burner for liquid fuel
    2.
    发明授权
    Burner for liquid fuel 有权
    燃料用于液体燃料

    公开(公告)号:US06540505B1

    公开(公告)日:2003-04-01

    申请号:US09786222

    申请日:2001-03-01

    IPC分类号: F23D1314

    摘要: A burner for liquid fuel has an electric heating device for start up heating a fuel vaporization chamber to a selected temperature, a flame retention baffle being fitted on the vaporization chamber with a temperature sensor sensing temperature of the vaporization. When the vaporization chamber is heated to a desired temperature of about 350 degrees celsius by deflected hot exhaust gas products from the burner operation and such temperature is sensed, the sensor outputs a signal so that the electric heating device can be shut down, vaporization chamber heating then being maintained by the deflected hot exhaust gas flow.

    摘要翻译: 一种用于液体燃料的燃烧器具有用于启动将燃料蒸发室加热至选定温度的电加热装置,在蒸发室内装有感温蒸发温度的温度传感器的阻燃挡板。 当通过来自燃烧器操作的偏转的热废气产物将蒸发室加热到约350摄氏度的期望温度时,感测出这种温度,传感器输出信号,使得电加热装置可以关闭,汽化室加热 然后被偏转的热废气流维持。

    Process for continuous alkylation of phenol using ion exchange resins
    3.
    发明授权
    Process for continuous alkylation of phenol using ion exchange resins 失效
    使用离子交换树脂连续烷基化苯酚的方法

    公开(公告)号:US4168390A

    公开(公告)日:1979-09-18

    申请号:US711461

    申请日:1976-08-04

    IPC分类号: C07C37/14 C07C39/06

    CPC分类号: C07C37/14

    摘要: An improved process for the continuous alkylation of phenol with olefins having 6 to 12 carbon atoms in the liquid phase and in the presence of strongly acid ion exchange resin catalysts mounted in a fixed bed. The phenol and olefins are passed in a first stage at temperatures from about 80.degree. to 120.degree. C. over an ion exchange resin catalyst having an exchange capacity of from 50 to 96 m Val per 100 ml of catalyst and then passed in a second stage at temperatures about 110.degree. to 130.degree. C. over another ion exchange resin catalyst having an exchange capacity of from 100 to 180 m Val per 100 ml of catalyst.

    摘要翻译: 在液相中和在安装在固定床中的强酸性离子交换树脂催化剂的存在下,使具有6-12个碳原子的烯烃连续烷基化苯酚的改进方法。 苯酚和烯烃在温度为约80℃至120℃的第一阶段通过交换容量为每100毫升催化剂50至96微米的Val的离子交换树脂催化剂,然后在第二阶段 在相对于每100毫升催化剂具有100-180微摩尔交换容量的另一种离子交换树脂催化剂的温度下,在约110℃至130℃的温度下进行。

    Process for the preparation of dihalobutyraldehydes
    5.
    发明授权
    Process for the preparation of dihalobutyraldehydes 失效
    二卤丁醛的制备方法

    公开(公告)号:US5015780A

    公开(公告)日:1991-05-14

    申请号:US465813

    申请日:1990-01-16

    CPC分类号: C07C45/63 C07C45/65

    摘要: Dihalobutyraldehydes of formula I ##STR1## wherein X and Y are each independently of the other Cl or Br, are obtainable at high rates of conversion and with excellent selectivities by catalytic dehalogenation with hydrogen by carrying out the reaction with appropriate .alpha.,.alpha.-dihalobutyraldehydes in an organic aprotic solvent. The dihalobutyraldehydes are intermediates for the synthesis of herbicidal acyl cyclohexanediones.

    摘要翻译: 式I的二卤代丁醛其中X和Y各自独立地为Cl或Br,可以高转化率获得,并且通过与合适的α,α进行反应,与氢气进行催化脱卤可以获得优异的选择性 - 二卤丁醛在有机非质子溶剂中。 二卤丁醛是用于合成除草酰基环己二酸的中间体。

    Process and apparatus for removing films of flow agent clinging to
moving strip material
    6.
    发明授权
    Process and apparatus for removing films of flow agent clinging to moving strip material 失效
    用于去除附着在移动带状材料上的流动剂膜的方法和装置

    公开(公告)号:US4757569A

    公开(公告)日:1988-07-19

    申请号:US837029

    申请日:1986-03-06

    摘要: A process for the removal of films of flow agent from moving strip material, by squeezing away the film by means of squeeze rollers and an air flow duct which each extend transversely with respect to the forward feed direction of the strip material. The air flow is directed along the squeezed-away cushion of flow agent, and entrains the cushion of flow agent. Apparatus which is used in the process includes air flow ducts which extend transversely with respect to the forward feed direction of the strip material, and which are positioned at the point of entry of the strip material into the squeeze region.

    摘要翻译: 通过挤压辊和空气流动管道挤压膜,该方法各自相对于带状材料的向前进给方向横向延伸,从而移动带状材料的流动剂膜的移除方法。 空气流沿着流动剂的挤压垫被引导,并夹带流动剂缓冲垫。 在该方法中使用的装置包括相对于带状材料的向前进给方向横向延伸的空气流动管道,并且其被定位在条状材料进入挤压区域的点处。

    Process for the manufacture of p-alkylphenols
    7.
    发明授权
    Process for the manufacture of p-alkylphenols 失效
    对烷基苯酚的制备方法

    公开(公告)号:US4236033A

    公开(公告)日:1980-11-25

    申请号:US948609

    申请日:1978-10-04

    CPC分类号: C07C37/14 Y02P20/582

    摘要: In a process for the manufacture of a p-alkylphenol by alkylating phenol with an olefin of 3 to 4 carbon atoms, at an elevated temperature, in the liquid phase, in two reaction zones in series and in the presence of a strongly acidic ion exchange resin as the catalyst, an improvement comprises:(a) passing in a first reaction stage at a temperature of 80.degree.-140.degree. C. over a suspended catalyst, the olefin as a gas at a gas velocity of 30 to 20 cm/second, based on the free cross-section of the empty reactor and on a molar volume of 25 liters per mole of olefin, from below into the reaction mixture; and(b) passing the resulting liquid reaction product, into a second reaction stage, at a temperature of 80.degree.-140.degree. C. over a fixed-bed catalyst;wherein a catalyst having an exchange capacity of 70-120 m. equivalents/100 cm.sup.3 is used in both reaction stages.

    摘要翻译: 在通过用3〜4个碳原子的烯烃烷基化苯酚的方法中,在升高的温度下,在液相中,串联的两个反应区域和强酸性离子交换剂的存在下制备对烷基苯酚 树脂作为催化剂,其改进包括:(a)在80-140℃的温度下在悬浮催化剂上通入第一反应阶段,以气体速度为30至20cm /秒的气体作为气体 基于空反应器的自由横截面和摩尔体积为25升每摩尔烯烃,从下面到反应混合物中; 和(b)将所得的液体反应产物在80-140℃的温度下通过固定床催化剂进入第二反应阶段; 其中交换容量为70-120微米的催化剂。 在两个反应阶段都使用当量/ 100 cm3。

    Intermediates for the preparation of peptide analogues
    9.
    发明授权
    Intermediates for the preparation of peptide analogues 失效
    用于制备肽类似物的中间体

    公开(公告)号:US5912352A

    公开(公告)日:1999-06-15

    申请号:US866558

    申请日:1997-05-30

    摘要: The invention relates to a novel process for the preparation of compounds of formula I ##STR1## wherein R.sub.1 is hydrogen or a suitable amino-protecting group,R.sub.2 is unsubstituted or substituted alkyl,R.sub.3 is hydrogen, aryl, heterocyclyl, unsubstituted or substituted alkyl or unsubstituted or substituted cycloalkyl,R.sub.4, independently of R.sub.1, is hydrogen or a suitable amino-protecting group andm is a number from 1 to 7; and wherein further suitable protecting groups for functional groups may be present; which compounds are antivirally active or can be used as starting materials for pharmaceutically active, especially antiviral compounds.The precursor is an oxo compound,which is in turn prepared by hydrogenation with a suitable complex hydride or with hydrogen in the presence of a suitable catalyst and acyl migration starting from a hydrazone,which is in turn preferably prepared from a nitrile via an imino compound by means of hydrogenation and reaction with a hydrazine derivative,which is prepared from an aldehyde by reaction with a reactive derivative of a carboxylic acid in the presence of a cyanide salt;and the novel intermediates required therefor.

    摘要翻译: 本发明涉及一种制备式I化合物的新方法,其中R 1为氢或适当的氨基保护基,R 2为未取代或取代的烷基,R 3为氢,芳基,杂环基,未取代或取代的烷基或未取代或取代的 环烷基,独立于R 1的R 4是氢或合适的氨基保护基,m是1至7的数; 并且其中可以存在其它合适的官能团保护基团; 哪些化合物是抗病毒活性的或可以用作药物活性的起始原料,特别是抗病毒化合物。 前体是氧代化合物,其又通过在合适的催化剂存在下用合适的络合氢化物或氢气氢化制备,并且从腙开始进行酰基迁移,其又优选通过亚氨基化合物由腈制备 通过氢化和与肼衍生物反应,肼衍生物通过与氰化物的存在下与羧酸的反应性衍生物反应由醛制备; 和所需的新型中间体。