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    • 3. 发明授权
    • Process for preparing hydroxyalkylbenzocyclobutenes
    • 制备羟烷基苯并环丁烯的方法
    • US5349095A
    • 1994-09-20
    • US982213
    • 1992-11-25
    • P. J. ThomasR. Garth Pews
    • P. J. ThomasR. Garth Pews
    • C07C29/14C07C33/34C07C45/00C07C45/51C07C49/792
    • C07C49/792C07C29/14C07C33/34C07C45/004C07C45/513C07C2101/06
    • A process for preparing a substituted or unsubstituted 3- or 4-hydroxyalkylbenzocyclobutene compound comprises reducing a corresponding 3- or 4-formyl or ketobenzocyclobutene compound with a hydride at a temperature below that at which dimerization or oligomerization of the formyl- or ketobenzocycloutene compound or the thus-produced hydroxyalkylbenzocyclobutene compound is a significant side reaction, for a time sufficient to convert the formyl- or ketobenzocyclobutene compound to the hydroxyalkylbenzocyclobutene compound. In a two-step process, formylbenzocyclobutenes are prepared from bromobenzocyclobutenes in 90% yield or from benzocyclobutenes in a 70% yield, and then converted to hydroxymethylbenzocyclobutenes for an overall yield of about 85% from a bromobenzocyclobutene or of about 65% from a benzocyclobutene. In a two-step process, ketobenzocyclobutenes from bromobenzocyclobutene Grignard reagents and an N-alkanoyl- or N-aroyl-2-methylaziridine are converted to hydroxyalkylbenzocyclobutenes in high yields.
    • 取代或未取代的3-或4-羟基烷基苯并环丁烯化合物的方法包括在低于甲酰基或酮基苯并环丁烯化合物的二聚或低聚的温度下用氢化物还原相应的3-或4-甲酰基或酮基苯并环丁烯化合物或 因此产生的羟烷基苯并环丁烯化合物是足够将甲酰基或酮基苯并环丁烯化合物转化为羟烷基苯并环丁烯化合物的显着副反应。 在两步法中,甲酰基苯并环丁烯由90%产率的溴代苯并环丁烯或70%产率的苯并环丁烯制备,然后从溴代苯并环丁烯转化为羟甲基苯并环丁烯,总产率为约85%,或从苯并环丁烯转化为约65%。 在两步法中,来自溴苯并环丁烯格氏试剂和N-烷酰基或N-芳酰基-2-甲基氮丙啶的酮基苯并环丁烯以高产率转化为羟基烷基苯并环丁烯。
    • 6. 发明授权
    • Process for preparing ester of hydroxymethylbenzocyclobutenes
    • 制备羟甲基苯并环丁烯酯的方法
    • US5264613A
    • 1993-11-23
    • US861700
    • 1992-04-10
    • P. J. ThomasR. Garth Pews
    • P. J. ThomasR. Garth Pews
    • C07C69/007C07C69/44C07C69/80C07C69/82C07C69/96C07C69/76C07C69/34C07C313/00
    • C07C69/007C07C69/44C07C69/80C07C69/82C07C69/96
    • A process for preparing carboxylic acid esters of of the formulaX--(COOCH.sub.2 A).sub.nwherein A is the residue of a substituted or unsubstituted 3- or 4-benzocyclobutene compound, X is an n-valent organic bridging group, and n is 2,3, or 4, comprises reacting a substituted or unsubstituted 3- or 4-hydroxymethylbenzocyclobutene compound with a compound of the formula X--(COY).sub.n, wherein X is an n-valent organic bridging group and Y is Cl or Br. Esters of inorganic acids of the formulaX'(OCH.sub.2 A).sub.nwherein X' is a residue of an inorganic acid halide, n is 2 or 3, and A is the residue of a substituted or unsubstituted 3- or 4-benzocyclobutene compound, are prepared by reacting an inorganic halide of the formula X'Y.sub.n, wherein Y is Br or Cl, with a substituted or unsubstituted 3- or 4-hydroxymethylbenzocyclobutene compound. Biscarbonates of the formula X"[OC(.dbd.O)CH.sub.2 A].sub.2 wherein X" is the residue of a diphenol are prepared by reaction between a bis(halocarbonyl) compound of the formula X"[OC(.dbd.O)Y].sub.2, wherein Y is Cl or Br, and a substituted or unsubstituted 3- or 4-hydroxymethylbenzocyclobutene compound. The resulting esters are useful for making resins.
    • 一种制备式X-(COOCH 2 A)n的羧酸酯的方法,其中A是取代或未取代的3-或4-苯并环丁烯化合物的残基,X是n价有机桥基,n是2, 3或4包括使取代或未取代的3-或4-羟甲基苯并环丁烯化合物与式X-(COY)n的化合物反应,其中X为n价有机桥基,Y为Cl或Br。 式X'(OCH 2 A)n的无机酸的酯,其中X'为无机酰卤的残基,n为2或3,A为取代或未取代的3-或4-苯并环丁烯化合物的残基,为 通过使式X'Yn的无机卤化物(其中Y是Br或Cl)与取代或未取代的3-或4-羟甲基苯并环丁烯化合物反应制备。 式X“[OC(= O)CH 2 A] 2的双碳酸酯,其中X”是二酚的残基,通过式X“[OC(= O)Y ] 2,其中Y是Cl或Br,以及取代或未取代的3-或4-羟甲基苯并环丁烯化合物。 所得的酯可用于制备树脂。
    • 7. 发明授权
    • Process for nitrating benzocyclobutene compounds
    • 硝化苯并环丁烯化合物的方法
    • US5210339A
    • 1993-05-11
    • US868812
    • 1992-04-15
    • P. J. ThomasR. Garth Pews
    • P. J. ThomasR. Garth Pews
    • C07C205/06C07C205/42
    • C07C201/08C07C2101/04
    • An improved process for the nitration of a substituted or unsubstituted benzocyclobutene compound in a reaction mixture comprising a nitrating agent, an unhalogenated carboxylic acid anhydride, clay and a solvent to produce a corresponding nitrobenzocyclobutene compound, is that wherein:(a) the solvent has a density above that of the nitrating agent or an extractable precursor thereof;(b) the reaction mixture is heated at a temperature such that solvent is removed from the reaction mixture to a site outside the reaction mixture to extract nitrating agent or extractable precursor thereof; and(c) the thus-extracted nitrating agent or precursor thereof is fed into the reaction mixture to nitrate the benzocyclobutene compound.
    • 在包含硝化剂,未卤化羧酸酐,粘土和溶剂以产生相应的硝基苯并环丁烯化合物的反应混合物中硝化取代或未取代的苯并环丁烯化合物的改进方法是其中:(a)溶剂具有 浓度高于硝化剂或其可萃取的前体; (b)将反应混合物在使反应混合物中除去溶剂至反应混合物外的位置的温度下加热以提取硝化剂或其可萃取的前体; 和(c)将由此提取的硝化剂或其前体进料到反应混合物中以使苯并环丁烯化合物硝酸化。