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    • 71. 发明授权
    • 2-tert-amyl compounds
    • 2-叔戊基化合物
    • US5354937A
    • 1994-10-11
    • US129333
    • 1993-09-30
    • Klaus EbelJuergen Schroeder
    • Klaus EbelJuergen Schroeder
    • C07C11/12C07C33/03C07C33/042C07C49/675C07C2/76C07C2/78C07C5/08
    • C07C33/042C07C11/12C07C33/03C07C49/675C07C2103/24
    • Tert-amyl compounds of the general formula I ##STR1## and novel processes for preparing 2-tert-amylbutadiene by dehydrating 3,4,4-trimethylhex-1-en-3-ol at from 100.degree. to 350.degree. C. and from 0.01 to 50 bar on acidic catalysts, its preparation by partially hydrogenating 3,4,4-trimethyl-hex-1-yn-03-ol at from 0.degree. to 50.degree. C. and from 0.01 to 50 bar and its preparation by reacting tert-amyl methyl ketone (3,3-dimethylpentan-2-one) with acetylene in the presence of basic catalysts at from 0.degree. to 60.degree. C. and from 0.01 to 50 bar, and also the preparation of 2-tert-amylanthraquinone by reacting 2-tert-amylbutadiene with 1,4-naphthoquinone at from 20.degree. to 200.degree. C. and from 0.01 to 50 bar to give 2-tert-amyl-1,4,4a,9a-tetrahydroanthraquinone and then oxidizing the latter in the presence of a strong base at from 0.degree. to 50.degree. C. are described.
    • 通式I的叔戊基化合物(I)< IMAGE>&IMAGE>和通过使3,4,4-三甲基己-1-烯-3-醇脱水制备2-叔戊基丁二烯的新方法 在酸性催化剂上为100〜350℃,0.01〜50巴,在0〜50℃下部分氢化3,4,4-三甲基 - 己-1-炔-3-醇, 0.01〜50巴,在0〜60℃,0.01〜50巴的碱性催化剂存在下,使叔戊基甲基酮(3,3-二甲基戊-2-酮)与乙炔反应制备, 还可以通过使2-叔戊基丁二烯与1,4-萘醌在20〜200℃和0.01〜50巴反应制备2-叔戊基-1,4,4a ,9a-四氢蒽醌,然后在0〜50℃的强碱存在下氧化后者。
    • 73. 发明授权
    • Process for preparing M- or P-substituted phenylalkanols by alkylation
    • 通过烷基化制备M-或P-取代的苯基链烷醇的方法
    • US08692025B2
    • 2014-04-08
    • US13503515
    • 2010-10-14
    • Andreas LanverKlaus EbelKarl BeckRalf PelzerJörg BotzemUlrich Griesbach
    • Andreas LanverKlaus EbelKarl BeckRalf PelzerJörg BotzemUlrich Griesbach
    • C07C45/29C07C29/32
    • C07C29/32C07C29/56C07C45/29C07C33/20C07C47/228
    • The invention relates to a process for the preparation of m- or p-substituted phenylalkanols of the formula (I) in which R1 is bonded to the phenyl ring in the m- or p-position and is C1-C5-alkyl, and R2, R3, R4 and R5, independently of one another, are hydrogen or methyl, wherein an unsubstituted phenylalkanol of the formula (II) in which R2, R3, R4 and R5 have the meanings given under formula (I) is alkylated together with a C1-C5-alkyl halide of the formula (III) R1-Hal  (III), in which R1 has the meaning given under formula (I) and Hal is halogen, in the presence of a Friedel-Crafts catalyst to give an m- or p-alkyl-substituted phenylalkanol of the formula (I), then the reaction mixture is worked-up and the desired m- or p-alkyl-substituted phenylalkanol of the formula (I) is separated off, the other formed by-products are returned to the reaction mixture and these are isomerized in the presence of a Friedel-Crafts catalyst to give the desired m- or p-alkyl-substituted phenylalkanol. From the m- or p-alkyl-substituted phenylalkanols of the formula (I), it is possible to form, by oxidation or dehydrogenation, as products of value, the corresponding aldehydes, which play an interesting role as fragrances and aroma chemicals.
    • 本发明涉及一种制备式(I)的间 - 或对 - 取代的苯烷醇的方法,其中R 1与m-或p-位上的苯环键合并且是C1-C5-烷基,R2 R 3,R 4和R 5彼此独立地为氢或甲基,其中R 2,R 3,R 4和R 5具有式(I)所示含义的式(II)的未取代的苯基烷醇与 其中R 1具有式(I)所示含义,Hal为卤素的式(III)R1-Hal(Ⅲ)的C1-C5烷基卤化物,在Friedel-Crafts催化剂存在下,得到m- 或式(I)的对烷基取代的苯基链烷醇,然后将反应混合物处理并分离所需的式(I)的间 - 或对 - 烷基取代的苯基烷醇,另一个形成的副产物 返回到反应混合物中,并将它们在Friedel-Crafts催化剂存在下异构化,得到所需的间 - 或对 - 烷基取代的苯基 kanol 从式(I)的间 - 或对 - 烷基取代的苯烷醇,可以通过氧化或脱氢形成作为有价值的产物,相应的醛作为香料和香气化学品起着重要的作用。