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公开(公告)号：US06229057B1
公开(公告)日：2001-05-08
申请号：US08571886
申请日：1996-01-11
IPC分类号： C07C17013
CPC分类号： C07C17/10 , Y02P20/582 , C07C19/12
摘要： There is provided a process for the preparation of 1,1,1-trichlorotrifluororethane in which 1,1-dichloro-2,2,2-trifluoroethane is subjected to chlorination by bringing the 1,1-dichloro-2,2,2-trifluoroethane into contact with chlorine within a reaction vessel characterised in that the process is conducted in the liquid phasein the presence of a chemical free radical initiator under a pressure of from 1 to 20 bar and at a temperature within the range 50 to 120° C., and the product is separated from the reaction mixture by fractional distillation. The product is useful in the manufacture of insecticides.
摘要翻译： 提供了制备1,1,1-三氯三氟乙烷的方法，其中1,1-二氯-2,2,2-三氟乙烷通过使1,1-二氯-2,2,2-三氟乙烷进行氯化， 三氟乙烷在反应容器内与氯接触，其特征在于该方法在1至20巴的压力和50至120℃的温度下，在化学自由基引发剂的存在下在液相中进行。 ，通过分馏将产物与反应混合物分离。 该产品可用于制造杀虫剂。
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公开(公告)号：US5783729A
公开(公告)日：1998-07-21
申请号：US751272
申请日：1996-11-18
IPC分类号： C07B61/00 , C07C315/04 , C07C317/44 , C07C51/16
CPC分类号： C07C315/04 , Y02P20/582
摘要： A process for preparing a compound of formula (I), ##STR1## where R.sup.1 is optionally substituted alkyl or phenyl, R.sup.2 is COOH, and R.sup.3 and R.sup.4 are independently selected from hydrogen, halo, haloalkyl, nitro, hydroxy, alkoxy, haloalkoxy or alkoxyalkoxy; which process comprises oxidising a compound of formula (II) ##STR2## where R.sup.1, R.sup.3 and R.sup.4 are as defined in relation to formula (I) and R.sup.5 is H, halo or C.sub.1-4 alkyl with sodium hypochlorite or sodium chlorite in the presence of a catalytic amount of a ruthenium or palladium compound and a phase transfer catalyst in an organic solvent at a pH of 7-11.
摘要翻译： 制备式（I）化合物的方法，其中R 1为任选取代的烷基或苯基，R 2为COOH，R 3和R 4独立地选自氢，卤素，卤代烷基，硝基，羟基，烷氧基 ，卤代烷氧基或烷氧基烷氧基 该方法包括将式（II）化合物（II）氧化，其中R 1，R 3和R 4如关于式（I）所定义，R 5为H，卤素或C 1-4烷基，与次氯酸钠或亚氯酸钠 在催化量的钌或钯化合物和相转移催化剂存在下，在有机溶剂中，pH为7-11。
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