CAS: 354-21-2; 1,1-Difluoro-1,2,2-Trichloroethane

上下游产品

CAS号127-18-4 四氯乙烯 | CAS号7783-71-3 氟化钽 | CAS号75-68-3 1-氯-1,1-二氟乙烷 | CAS号75-37-6 1,1-二氟乙烷 | CAS号359-29-5 氟三氯乙烯 | CAS号116-14-3 四氟乙烯 | CAS号76-01-7 五氯乙烷 | CAS号79719-21-4 2-bromo-1,1,2-t... | CAS号76-13-1 1,1,2-三氟三氯乙烷 | CAS号354-14-3 1-氟-1,1,2,2-四氯乙烷 | CAS号306-83-2 2,2-二氯-1,1,1-三氟乙烷 | CAS号354-24-5 氯二氟乙酰氯 | CAS号359-10-4 2-氯-1,1-二氟乙烯 | CAS号685-21-2 1,2,3,4-tetrach... | CAS号79-35-6 1,1-二氯-2,2-二氟乙烯 | CAS号79-01-6 三氯乙烯 | CAS号21400-41-9 1,1,3,4,4-Penta... | CAS号76-01-7 五氯乙烷 | CAS号67-72-1 六氯乙烷 | CAS号29185-18-0 (1,2-dichloro-v...

📜四氯乙烯置于氢氟酸,五氟化锑体系中,用78.2%的收率获得1,2,2-三氯-1,1-二氟乙烷
参考文献:1-甲基-3-二氟甲基-4-吡唑酸和1-甲基-3-三氟甲基-4-吡唑酸的制备方法
标题:1-甲基-3-二氟甲基-4-吡唑酸和1-甲基-3-三氟甲基-4-吡唑酸的制备方法
摘要:本发明涉及一种1‑甲基‑3‑二氟甲基‑4‑吡唑酸和1‑甲基‑3‑三氟甲基‑4‑吡唑酸的制备方法,属于化学合成技术领域.本发明的制备方法,以四氯乙烯作为起始物,经过氟化,光氧化,缩合,环化以及水解反应,合成制备得到的1‑甲基‑3‑二氟甲基‑4‑吡唑酸与1‑甲基‑3‑三氟甲基‑4‑吡唑酸,具有低成本,低异构物与高选择性等优点,并且目标产物具有非常好的纯度与收率.本发明制备方法工艺操作安全,合成条件温和,目标产物收率高,可作为工业放大实际应用.

专利信息

专利号:US-10669160-B2
优先权日:2018-04-30
标题:Heterogeneous wet synthesis process for preparation of high purity tungsten pentahalide
发明人：LIU YUMIN; LI FENG; WAN ZHIWEN; FAFARD CLAUDIA; WIESE STEFAN; HUSSON GUILLAUME; NIKIFOROV GRIGORY; SUI BIN; GIRARD JEAN-MARC
权利人:AIR LIQUIDE; AIR LIQUIDE AMERICAN
摘要:Synthesis of tungsten pentahalide compositions having low impurity profiles are disclosed. The specific impurity profile permits deposition of high purity tungsten-containing films using vapor deposition processes or other semiconductor manufacturing processes without introduction of performance-impacting contaminants.

专利号:US-7319175-B2
优先权日:2001-12-21
标 题 :Catalyst synthesis of halogenated compounds with catalyst regeneration with elemental halogen
发明人：BRAUN MAX; BROSCH CARSTEN
权利人:SOLVAY FLUOR & DERIVATE
摘要:Catalysts such as antimony halides, which are useful in fluorination reactions involving hydrogen fluoride, may be reduced during the reaction and require regeneration. Regenerative oxidation is usually carried out by introducing elemental halogen, preferably fluorine or chlorine, into the reaction mixture. In accordance with the invention elemental halogen is prevented from coming into contact with starting materials or intermediate products which are reactive therewith. This is preferably achieved by withdrawing part of the reaction mixture from the reactor, mixing the withdrawn part with chlorine or fluorine in order to regenerate the catalyst, and thereafter returning the withdrawn part to the reactor.

专利号:WO-2025019747-A1
优先权日:2023-07-20
标题:Processes for the production of z-1,1,1,4,4,4-hexafluoro-2-butene intermediates and compositions thereof
发明人：PENG SHENG
权利人:CHEMOURS CO FC LLC
摘要:Methods of synthesis of intermediates, such as 2-chloro-1,1,1,4,4,4-hexafluoro-2-butene and 2,3-dichloro-1,1,1,4,4,4-hexafluoro-2-butene, which can be used in the production fluorinated olefins, such as 1,1,1,4,4,4-hexafluoro-2-butene, from hexafluorobutadiene, are provided.

专利号:WO-2025019754-A1
优先权日:2023-07-20
标 题:Processes for the production of hexafluoro-2-butyne and compositions thereof
发明人：PENG SHENG; HAGEDORN JOHN JOSEPH; ZIMMERMAN WILLIAM H
权利人:CHEMOURS CO FC LLC
摘要:Methods of synthesis of intermediates, such as hexafluoro-2-butyne, which can be used in the production fluorinated olefins, such as Z-1,1,1,4,4,4-hexafluoro-2-butene, are provided.

专利号:US-5665838-A
优先权日:1995-04-24
标题 :Fluoroalkene/hydrochlorofluorocarbon telomers and their synthesis
发明人：PEAVY RICHARD EDWIN
权利人:DU PONT
摘要:The invention relates to fluorotelomers, their synthesis by free radical-initiated telomerization of fluoroalkenes (e.g. TFE) in which hydrochlorofluorocarbons (HCFC's) are used both as telogens and as solvents, and dispersions of the fluorotelomers in HCFC's. The fluorotelomers are normally solid, essentially non-distillable and highly crystalline, and their dispersions exhibit excellent lubricant properties and stability under normal usage and have a negligible impact on the environment compared to conventional telomer dispersions.

专利号:US-2006036118-A1
优先权日:2001-12-21
标题:Catalyst synthesis of halogenated compounds with catalyst regeneration with elemental halogen