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    • 2. 发明授权
    • Preparation of dimethyl 4,4'-stilbenedicarboxylate and intermediates
therefor
    • 制备4,4'-二苯乙烯二甲酸二甲酯及其中间体
    • US4713472A
    • 1987-12-15
    • US863274
    • 1986-05-15
    • Dale E. Van Sickle
    • Dale E. Van Sickle
    • C07C69/76C07C67/313C07C67/32
    • C07C69/76
    • The preparation of 4,4'-dimethylstilbenedicarboxylate by acetylating 4,4'-bis(methoxycarbonyl)benzoin to give 4,4'-bis(methoxycarbonyl)benzoin acetate, selectively reducing 4,4'-bis(methoxycarbonyl)benzoin acetate with hydrogen to give 1,2-bis(4-methoxycarbonylphenyl)ethanol, and subjecting the 1,2-bis(4-methoxycarbonylphenyl)ethanol to either (1) dehydration or (2) acetylation to 1,2-bis(4-carbomethoxyphenyl)-1-acetoxy ethane followed by pyrolysis thereof to give the 4,4'-dimethylstilbenedicarboxylate. In this process, the new compounds 4,4'-bis(methoxycarbonyl)benzoin acetate, 1,2-bis(4-methoxycarbonylphenyl)ethanol, and 1,2-bis(4-carbomethoxyphenyl)-1-acetoxy ethane are produced and the novel preparations thereof are performed.
    • 通过乙酰化4,4'-双(甲氧基羰基)苯偶姻制备4,4'-二(甲氧基羰基)苯偶姻乙酸乙酯,通过氢气选择性还原4,4'-双(甲氧基羰基)苯偶姻乙酸酯,制备4,4'-二甲基二苯乙烯二酸二乙酯 得到1,2-双(4-甲氧基羰基苯基)乙醇,并使1,2-双(4-甲氧基羰基苯基)乙醇(1)脱水或(2)乙酰化为1,2-双(4-甲氧基苯基) -1-乙酰氧基乙烷,然后热解,得到4,4'-二甲基二苯乙烯二羧酸酯。 在该方法中,制备新化合物4,4'-双(甲氧基羰基)苯偶姻乙酸酯,1,2-双(4-甲氧基羰基苯基)乙醇和1,2-双(4-甲酯基苯基)-1-乙酰氧基乙烷, 进行其新型制备。
    • 3. 发明授权
    • Process for preparation of 4-isopropylphenol
    • 4-异丙基苯酚的制备方法
    • US4484011A
    • 1984-11-20
    • US557691
    • 1983-12-02
    • Dale E. Van Sickle
    • Dale E. Van Sickle
    • C07C37/48C07C39/06
    • C07C37/48Y02P20/582
    • The process for preparing 4-isopropylphenol (4-IPP) from 2-isopropylphenol (2-IPP) comprising contacting phenol with 2-IPP in the presence of a catalyst system selected from: (1) the combination of sulfuric acid on comminuted acid clay and a molecular sieve; and (2) trifluoromethane sulfonic acid (TFMSA); at a temperature of from about 90.degree. C. to about 250.degree. C., preferably from about 110.degree. C. to about 200.degree. C., wherein the initial mole ratio of phenol/2-IPP is from about 6 to about 2, preferably from about 4 to about 2.5, for a sufficient period to give a mole ratio of 4-IPP/2-IPP in the reaction system of from about 0.6 to about 1.5, and preferably from about 0.8 to about 1.2, without significant meta-isopropylphenol formation, i.e., less than about 10 mole %. In the isolation procedure, distillation separates the reaction mixture into phenol, 2-IPP, and 4-IPP.
    • 由2-异丙基苯酚(2-IPP)制备4-异丙基苯酚(4-IPP)的方法,包括在催化剂体系存在下使苯酚与2-IPP接触,所述催化剂体系选自:(1)硫酸在粉碎酸性粘土 和分子筛; 和(2)三氟甲磺酸(TFMSA); 在约90℃至约250℃的温度下,优选约110℃至约200℃,其中苯酚/ 2 -IPP的初始摩尔比为约6至约2, 优选约4至约2.5,持续足够的时间以使反应体系中的4-IPP / 2-IPP的摩尔比为约0.6至约1.5,优选约0.8至约1.2, 异丙基苯酚形成,即小于约10摩尔%。 在分离过程中,蒸馏将反应混合物分离成苯酚,2-IPP和4-IPP。
    • 10. 发明授权
    • Process for manufacturing aromatic diacetates
    • 制备芳香族二乙酸酯的方法
    • US5210279A
    • 1993-05-11
    • US551662
    • 1990-07-12
    • Dale E. Van SickleBrad W. Overturf
    • Dale E. Van SickleBrad W. Overturf
    • C07C67/05
    • C07C67/05Y02P20/582
    • A continuous process for the production of diacetate derivatives of aromatic compounds, comprising feeding at any convenient temperature an oxygen-containing gas and feedstock comprising a diisopropyl ring substituted aromatic compound and the recycled monoisopropyl-monoacetate derivative thereof, to an oxidizer operated, for example, at from about 10.degree. C. to about 150.degree. C. and oxygen partial pressures of from about 0.05 to 10 atmospheres to form an oxidizer product comprising the mono- and dihydroperoxides of the feedstock, feeding the oxidizer product to a rearrangement-esterification zone containing acetic anhydride at from about 0.degree. C. to 150.degree. C. to form an ester product comprising the diacetate and monoisopropyl-monoacetate derivatives of the feedstock, distilling the ester product to separate the diacetate and monoisopropyl-monoacetate derivatives, and recycling the monoisopropyl-monoacetate derivative back to the oxidizer.
    • 一种用于生产芳族化合物的二乙酸酯衍生物的连续方法,包括在任何适宜的温度下将含氧气体和包含二异丙基环取代的芳族化合物的原料和其再循环的单异丙基 - 一乙酸酯衍生物进料到氧化剂中, 在约10℃至约150℃,氧分压为约0.05至10个大气压,以形成包含原料的单氢化合物和二氢过氧化物的氧化剂产物,将氧化剂产物进料至含有 乙酸酐在约0℃至150℃下反应以形成包含原料的二乙酸酯和单异丙基 - 一乙酸酯衍生物的酯产物,蒸馏酯产物以分离二乙酸酯和单异丙基 - 一乙酸酯衍生物,并将单异丙基 - 单乙酸酯衍生物回到氧化剂。