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    • 1. 发明授权
    • Process for producing 2-ethylhexyl-p-methoxycinnamate
    • 2-甲基肉桂酸-2-乙基己酯的制备方法
    • US4970332A
    • 1990-11-13
    • US321273
    • 1989-03-09
    • Douglas C. Caskey
    • Douglas C. Caskey
    • B01J23/44C07B61/00C07C51/367C07C67/343C07C69/734
    • C07C51/367
    • A process for producing cinnamates comprising reacting an iodobenzene compound with an acrylate ester in the presence of trialkylamine and a catalyst comprising palladium on a support. In one embodiment, 2-ethylhexyl-p-methoxycinnamate is produced by the process comprising diazotizing p-anisidine to produce a diazotization product and reacting the diazotization product with an aqueous iodide solution to produce 4-iodoanisole, reacting the 4-iodoanisole product with 2-ethylhexylacrylate in the presence of trialkylamine and a catalyst comprising palladium on a support to produce 2-ethylhexyl-p-methoxycinnamate and a trialkylamine-hydroiodide salt and then recovering iodide and trialkylamine from the trialkylamine-hydroiodide salt by reacting the salt with an alkali hydroxide.
    • 一种生产肉桂酸酯的方法,包括在三烷基胺存在下使碘苯化合物与丙烯酸酯反应,并在载体上包含钯。 在一个实施方案中,通过包括重氮化对甲氧基苯胺以产生重氮化产物并使重氮化产物与碘化碘水溶液反应以产生4-碘苯甲醚来制备2-甲氧基肉桂酸-2-乙基己酯,使4-碘苯甲醚产物与2 乙基己基丙烯酸酯在三烷基胺和包含钯的催化剂存在下在载体上制备2-乙基己基 - 对甲氧基肉桂酸酯和三烷基胺 - 氢碘酸盐,然后通过使该盐与碱金属氢氧化物反应从三烷基胺 - 氢碘酸盐中回收碘化物和三烷基胺 。
    • 3. 发明授权
    • Process for preparing p-aminophenol and alkyl substituted p-aminophenol
    • 制备对氨基苯酚和烷基取代的对氨基苯酚的方法
    • US4571437A
    • 1986-02-18
    • US516857
    • 1983-07-25
    • Douglas C. CaskeyDouglas W. Chapman
    • Douglas C. CaskeyDouglas W. Chapman
    • C07C215/76C07C89/00
    • C07C215/76Y02P20/582
    • A process for preparing unsubstituted and alkyl substituted p-aminophenols. A charge mixture is prepared comprising an unsubstituted or alkyl substituted nitrobenzene, a highly dissociated acid, a catalyst containing platinum and a divalent sulfur compound in which sulfur is bonded to two other moieties, the sulfur compound being present in a proportion of between about 0.1 and about 100 moles per gram-atom of platinum. The mixture comprises an organic phase containing the substrate and an aqueous phase containing the acid. Hydrogen is introduced into the mixture at a pressure of 0-50 psig while the mixture is agitated at a temperature of 70.degree. C. to 100.degree. C., thereby causing the substrate to be reduced to phenylhydroxylamine or an alkyl substituted phenylhydroxylamine. The hydroxylamine is rearranged in the presence of acid to the substituted or unsubstituted p-aminophenol, which is recovered from the aqueous phase.
    • 一种制备未取代和烷基取代的对氨基苯酚的方法。 制备包含未取代或烷基取代的硝基苯,高度离解的酸,含有铂的催化剂和其中硫与两个其它部分结合的二价硫化合物的电荷混合物,所述硫化合物以约0.1和 每克原子铂约100摩尔。 混合物包含含有底物的有机相和含有酸的水相。 在0-50psig的压力下将氢气引入混合物中,同时将混合物在70℃至100℃的温度下搅拌,由此使底物还原成苯基羟胺或烷基取代的苯基羟胺。 在酸存在下将羟胺重排为取代或未取代的对氨基苯酚,其从水相中回收。
    • 9. 发明授权
    • Process for preparing p-aminophenol and alkyl substituted p-aminophenol
    • 制备对氨基苯酚和烷基取代的对氨基苯酚的方法
    • US4415753A
    • 1983-11-15
    • US343993
    • 1982-01-29
    • Douglas C. CaskeyDouglas W. Chapman
    • Douglas C. CaskeyDouglas W. Chapman
    • C07B61/00B01J23/00C07C67/00C07C213/00C07C215/76C07C85/11C07C89/00
    • C07C215/76
    • A process for the production of unsubstituted and lower alkyl substituted p-aminophenols. A charge mixture is prepared comprising an unsubstituted or lower alkyl substituted nitrobenzene substrate, a platinum catalyst and a sulfur compound. The sulfur compound may be a divalent sulfur compound in which sulfur is bonded to two other moieties or a compound reducible to such sulfur compound under catalytic hydrogenation conditions. Hydrogen is introduced into the mixture while it is agitated at a temperature of 0.degree.-40.degree. C., thereby reducing the substrate to an unsubstituted or alkyl substituted phenylhydroxylamine. The hydroxylamine is thereafter heated to a temperature of at least 70.degree. C. and agitated at at least 70.degree. C. in the presence of a highly dissociated acid, thereby effecting rearrangement of the hydroxylamine to the corresponding p-aminophenol.
    • 一种制备未取代和低级烷基取代的对氨基苯酚的方法。 制备包含未取代或低级烷基取代的硝基苯底物,铂催化剂和硫化合物的电荷混合物。 硫化合物可以是二价硫化合物,其中硫在催化氢化条件下结合到两个其它部分或可还原成这种硫化合物的化合物。 将氢气在0℃-40℃的温度下搅拌引入混合物中,从而将底物还原成未取代或烷基取代的苯基羟胺。 然后将羟胺加热至至少70℃的温度,并在高度离解的酸存在下在至少70℃下搅拌,从而实现羟胺重排为相应的对氨基苯酚。