CAS: 76437-40-6; 2,3,5,6-Tetrafluoro-4-(Trifluoromethyl)Benzyl Bromide

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CAS号778-35-8 1,2,4,5-tetrafl...

📜2,3,5,6-Tetrafluoro-4-(Methoxycarbonyl)Benzoic Acid置于亚磷酸三苯酯,Lithium Aluminium Tetrahydride,氢氟酸体系中,用 2-甲基四氢呋喃,氯仿 作为反应溶剂,化学反应 53.17H,反应生成 2,3,5,6-四氟-4-(三氟甲基)溴化苯甲基
参考文献:1-溴代甲基-2,3,5,6-四氟-4-(三氟甲基)苯 的制备方法
标题:1-溴代甲基-2,3,5,6-四氟-4-(三氟甲基)苯 的制备方法
摘要:本发明公开了一种1‑溴代甲基‑2,3,5,6‑四氟‑4‑(三氟甲基)苯的制备新方法,它是以化合物2,3,5,6‑四氟‑对苯二甲酸为原料,先通过烷基化得到2,3,5,6‑四氟‑对苯二甲酸双酯,再进行单水解,然后氟代甲酸成三氟甲基得到2,3,5,6‑四氟‑4‑三氟甲基苯甲酸酯,还原成醇后经溴代得到目标化合物.该方法的反应原料易得,价格便宜,反应副产物少,产品易于纯化,收率高,适合工业化大生产,从而为新药2‑羟基‑5‑(2,3,5,6‑四氟‑4‑三氟甲基苄氨基)苯甲酸的关键中间体提供了可靠保障.

专利信息

专利号:US-5108725-A
优先权日:1990-01-25
标题 :Synthesis of mesoporous crystalline material
发明人：BECK JEFFREY S; CHU CYNTHIA T; JOHNSON IVY D; KRESGE CHARLES T; LEONOWICZ MICHAEL E; ROTH WIESLAW J; VARTULI JAMES C
权利人:MOBIL OIL CORP
摘要:This invention relates to a method for synthesizing a new synthetic composition of ultra-large pore crystalline material which can be used as a sorbent or catalyst component for conversion of organic and inorganic compounds. The crystalline material product of this method exhibits unusually large sorption capacity demonstrated by its benzene adsorption capacity of greater than about 15 grams benzene/100 grams at 50 torr and 25° C., a hexagonal electron diffraction pattern that can be indexed with a d 100 value greater than about 18 Angstrom Units and a hexagonal arrangement of uniformly sized pores with a maximum perpendicular cross section of at least about 13 Angstrom units.

专利号:US-5292880-A
优先权日:1992-05-11
标题:Synthesis of caprolactam using catalysts
发明人：APELIAN MINAS R; BELL WELDON K; FUNG ANTHONY S; HAAG WERNER O; VENKAT CHAYA
权利人:MOBIL OIL CORP
摘要:A process for catalytically converting cyclohexanone oxime to epsilon caprolactam. The conversion catalyst is a crystalline aluminosilicate zeolite having a Constraint Index greater than 1 and a reduced surface acidity. The surface acidity is reduced by selective surface dealumination of the crystalline aluminosilicate zeolite by contacting the zeolite with dicarboxylic acid, such as oxalic acid.

专利号:US-5246689-A
优先权日:1990-01-25
标题:Synthetic porous crystalline material its synthesis and use
发明人：BECK JEFFREY S; BORGHARD WILLIAM S; KRESGE CHARLES T; LEONOWICZ MICHAEL E; ROTH WIESLAW J; VARTULI JAMES C
权利人:MOBIL OIL CORP
摘要:This invention relates to a composition of matter, e.g., silicoaluminate or metalloaluminosilicate, comprising an inorganic, porous crystalline phase material exhibiting, after calcination, an X-ray diffraction pattern with at least one peak at a d-spacing greater than 1.8 nm and having a benzene adsorption capacity of greater than 15 grams benzene per 100 grams of said material at 6.7 kPa (50 torr) and 25° C. wherein said crystalline phase has a composition expressed as follows: n n M.sub.n/q (W.sub.a X.sub.b Y.sub.c O.sub.h) n n wherein M is one or more ions; n is the charge of the composition excluding M expressed as oxides; q is the weighted molar average valence of M; n/q is the number of moles or mole fraction of M; W is one or more divalent elements; X is one or more trivalent elements; Y is one or more tetravalent elements; a, b, and c are mole fractions of W, X, and Y, respectively; h is a number of from 1 to 2.5; (a+b+c)=1; and a, b, and c, are each >0.

专利号:EP-0512026-B1
优先权日:1990-01-25
标 题 :Synthetic porous crystalline material its synthesis and use
发明人：BECK JEFFREY SCOTT; CHU CYNTHIA TING-WAH; JOHNSON IVY DAWN; KRESGE CHARLES THEODORE; LEONOWICZ MICHAEL EDWARD; ROTH WIESLAW JERZY; VARTULI JAMES CLARKE
权利人:MOBIL OIL CORP
摘要:This invention relates to a composition of matter comprising an inorganic, porous crystalline phase material exhibiting, after calcination, an X-ray diffraction pattern with at least one peak at a d-spacing greater than 1.8 nm and having a benzene adsorption capacity of greater than 15 grams benzene per 100 grams of said material at 6.7 kPa (50 torr) and 25 °C. Preferably, the crystalline phase material has a hexagonal arrangement of uniformly-sized pores at least 1.3 nm in diameter and exhibiting, after calcination, a hexagonal electron diffraction pattern that can be indexed with a d100 value greater than 1.8 nm.

专利号:EP-0181284-B1
优先权日:1984-11-05
标题 :Amino acid esters
摘要:The invention provides novel compounds of formula (A) wherein R1 is hydrogen, methyl, ethynyl or cyano; R2 is lower alkyl, lower haloalkyl, lower alkoxy, lower haloalkoxy or halogen; W is oxygen or sulfur; X is hydrogen, chloro or fluoro; Y is halogen; Z is H, lower alkyl, lower haloalkyl, lower alkoxy, lower alkylcarbonyl, lower alkoxycarbonyl, nitro, cyano, halogen, lower alkenyl or lower alkoxyalkyl, their synthesis, the use of such compounds and of pesticidal compositions comprising such compounds for control of pests.

专利号:US-5234872-A
优先权日:1992-05-11
标 题:Method for producing zeolites with reduced surface acidity
发明人：APELIAN MINAS R; DEGNAN THOMAS F; FUNG ANTHONY S
权利人:MOBIL OIL CORP
摘要:A process for the selective surface dealumination of organic-containing zeolites by contacting the zeolite with dicarboxylic acid, such as oxalic acid. The treatment results in a reduction in surface acidity without a significant reduction in overall activity. The organic may be a directing agent used in the zeolite synthesis or introduced into the pores of the zeolite after thermal treatment.