CAS: 69045-82-5; 2-Fluoro-5-(Trifluoromethyl)Pyridine

相似化合物

65753-52-8 89402-42-6 1374659-41-2

上下游产品

CAS号52334-81-3 2-氯-5-三氟甲基吡啶 | CAS号72537-17-8 3-氯-2-氟-5-(三氟甲基)吡啶 | CAS号69045-78-9 2-氯-5-三氯甲基吡啶

2-氯-5-三氯甲基吡啶置于氢氟酸体系中,-5.0~180.0 °C,10.0 Mpa 条件下,反应 17.0H,以85.45%的收率获得产物2-氟-5-三氟甲基吡啶
参考文献:一种2-氟-5-三氟甲基吡啶的制备方法
标题:一种2-氟-5-三氟甲基吡啶的制备方法
摘要:本发明公开了一种2‑氟‑5‑三氟甲基吡啶的制备方法,属于有机合成技术领域.该方法步骤为:(1)以3‑甲基吡啶为原料,一步氯化合成2‑氯‑5‑三氯甲基吡啶粗品;(2)以纯化后2‑氯‑5‑三氯甲基吡啶为原料,以无水hf为氟化试剂,一步氟化合成2‑氟‑5‑三氟甲基吡啶粗品;(3)碱洗,水洗后的油层,经过减压精馏得到高纯度的2‑氟‑5‑三氟甲基吡啶.本发明具有转化率高,反应选择性好,生产成本低,适合于工业化生产.

专利信息

专利号:US-4939112-A
优先权日:1988-10-06
标 题:Catalyst for synthesis of vesicular phenoxy resins
发明人：BENNETT EVERETT W
权利人:JAMES RIVER PAPER CO
摘要:A catalyst for synthesis of vesicular phenoxy resins is disclosed. The catalyst includes a water-insoluble complex of a hydric phenol and a quaternary ammonium or phosphonium salt of the hydric phenol. Preferably, the hydric phenol is an intermediate of the phenoxy resin being produced. Dihydric phenols, such as sulfonyldiphenol are preferred. The invention further relates to a reaction medium for polymerization of phenoxy resins including the above-described catalyst and a solvent medium capable of dissolving the phenoxy resins and otherwise not interfering with the polymerization reaction. The solvent medium is advantageously free of toxic Methyl Cellosolve.

专利号:US-3721650-A
优先权日:1971-03-22
标题 :Reactive hydroxyalkyl-onium catalysts for synthesis of polyoxazolidones
发明人：D ALELIO G
权利人:ALELIO G D
摘要:A PROCESS FOR PREPARING POLYOXAZOLIDONES IS PROVIDED IN WHICH A POLYEPOXIDE IS REACTED WITH A POLYISOCYANATE IN THE PRESENCE OF CHEMICALLY REACTIVE HYDROXYALKYL-ONIUM CATALYSTS, SELECTED FROM THE CLASS OF AMMONIUM AND PHOSPHONIUM HALIDES HAVING AT LEAST TWO HYDROXYALKYL GROUPS. NOVEL POLYMERS ARE OBTAINED WHEN THESE NEW CATALYSTS CONTAINING TWO OR MORE HYDROXY GROUPS ARE CONDENSED WITH POLYISOCYANATES.

专利号:US-2008051323-A1
优先权日:2004-08-21
标 题 :Chloroquine drug compositions and methods for their synthesis
发明人：KOSAK KENNETH M
权利人:KOSAK KENNETH M
摘要:This invention discloses compositions of chloroquine-coupled active agents, including methods for their preparation. The prior art has shown that chloroquines given as free drug in high enough concentration, enhances the release of various agents from cellular endosomes into the cytoplasm. The purpose of these compositions is to provide a controlled amount of chloroquine at the same site where the active agent is delivered, thereby reducing the overall dosage needed. n The compositions comprise a chloroquine substance coupled to an active agent directly or through a variety of pharmaceutical carrier substances. The carrier substances include polysaccharides, synthetic polymers, proteins, micelles and other substances for carrying and releasing the chloroquine compositions in the body for therapeutic effect. The compositions can also include a biocleavable linkage for carrying and releasing active agents for therapeutic or other medical uses. The invention also discloses carrier compositions that are coupled to targeting molecules for targeting the delivery of chloroquine substances and active agents to their site of action.

专利号:US-2024400861-A1
优先权日:2021-10-01
标题 :Triazole- And/Or Triazolium-Based Polymers And Copolymers As Additives For Chemical Mechanical Planarization Slurries
发明人：LARBIG GREGOR; KIRSCH PEER; HENGST MATTHIAS; SHI XIAOBO; STENDER MATTHIAS
权利人:VERSUM MAT US LLC
摘要:Synthesis of triazole- and/or triazolium-based polymers is disclosed. Chemical Mechanical Planarization (CMP) slurries comprise abrasives; activator; oxidizing agent; additive comprising triazole- and/or triazolium-based polymers; and water. The use of the synthesized triazole- and/or triazolium-based polymers in the CMP slurries reduces dishing and erosion in highly selective tungsten slurries.

专利号:US-2007060499-A1
优先权日:2005-09-15
标 题 :Chloroquine combination drugs and methods for their synthesis
发明人：KOSAK KENNETH M
权利人:KOSAK KENNETH M
摘要:This invention discloses compositions of chloroquine-coupled active agents, including methods for their preparation. The prior art has shown that chloroquines given as free drug in high enough concentration, enhances the release of various agents from cellular endosomes into the cytoplasm. The purpose of these compositions is to provide a controlled amount of chloroquine at the same site where the active agent is delivered, thereby reducing the overall dosage needed. The compositions comprise a chloroquine substance coupled to an active agent directly or through a variety of pharmaceutical carrier substances. The carrier substances include polysaccharides, synthetic polymers, proteins, micelles and other substances for carrying and releasing the chloroquine compositions in the body for therapeutic effect. The compositions can also include a biocleavable linkage for carrying and releasing active agents for therapeutic or other medical uses. The invention also discloses carrier compositions that are coupled to targeting molecules for targeting the delivery of chloroquine substances and active agents to their site of action.

专利号:US-2007166281-A1
优先权日:2004-08-21
标题 :Chloroquine coupled antibodies and other proteins with methods for their synthesis
发明人：KOSAK KENNETH M
权利人:KOSAK KENNETH M
摘要:This invention discloses compositions of chloroquine-coupled active agents such as therapeutic antibodies or insulin, including methods for their preparation. The prior art has shown that chloroquines given as free drug in high enough concentration, enhances the release of various agents from cellular endosomes into the cytoplasm. The purpose of these compositions is to provide a controlled amount of chloroquine at the same site where the drug is delivered, thereby reducing the overall dosage needed. The compositions comprise a chloroquine substance coupled to a drug directly or through a variety of pharmaceutical carrier substances. The carrier substances include polysaccharides, synthetic polymers, proteins, micelles and other substances for carrying and releasing the chloroquine compositions in the body for therapeutic effect. The compositions can also include a biocleavable linkage for carrying and releasing the drug for therapeutic or other medical uses. The invention also discloses carrier compositions that are coupled to targeting molecules for targeting the delivery of chloroquine substances and antibody or insulin to their site of action.