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    • 97. 发明申请
    • PROCESS FOR NITRATING DIPHENYL ETHER COMPOUNDS
    • 硝基二苯醚化合物的方法
    • WO1997010199A1
    • 1997-03-20
    • PCT/GB1996001892
    • 1996-08-06
    • ZENECA LIMITEDBROWN, Stephen, MartinMUXWORTHY, James, Peter
    • ZENECA LIMITED
    • C07C201/08
    • C07C201/08C07C303/40C07C311/51C07C205/59
    • A process for the preparation of a compound of general formula (I) wherein R is hydrogen or C1-C6 alkyl, C2-C6 alkenyl or C2-C6 alkynyl (any of which may optionally be substituted with one or more substituents selected from halogen and OH) or COOH, COH, COOR , COR , CONR R or CONHSO2R ; R and R are each independently hydrogen or C1-C4 alkyl optionally substituted with one or more halogen atoms; R is a halogen atom or a group R ; R is hydrogen or halo; R is C1-C4 alkyl, C2-C4 alkenyl or C2-C4 alkynyl, any of which may optionally be substituted with one or more halogen atoms, or halo; the process comprising reacting a compound of general formula (II) wherein R , R and R are as defined for general formula (I); with a nitrating agent comprising nitric acid or a mixture of nitric and sulphuric acids in the presence of an organic solvent and in the presence of acetic anhydride, characterised in that the molar ratio of acetic anhydride to compound of general formula (I) is from about 1:1 to 3:1.
    • 制备通式(I)的化合物的方法,其中R 1是氢或C 1 -C 6烷基,C 2 -C 6烯基或C 2 -C 6炔基(其中任何一个可以任选地被一个或多个取代基所取代 COOH,COH,COOR 4,COR 6,CONR 4 R 5或CONHSO 2 R 4; R 4和R 5各自独立地为氢或任选被一个或多个卤素原子取代的C 1 -C 4烷基; R 6是卤素原子或基团R 4; R 2是氢或卤素; R 3是C 1 -C 4烷基,C 2 -C 4烯基或C 2 -C 4炔基,其中任何一个可以任选地被一个或多个卤素原子或卤素取代; 该方法包括使通式(II)的化合物,其中R 1,R 2和R 3如通式(I)所定义; 在硝酸和硝酸和硫酸的混合物的存在下,在有机溶剂存在下和在乙酸酐存在下,硝酸化剂,其特征在于乙酸酐与通式(I)化合物的摩尔比为约 1:1到3:1。
    • 99. 发明申请
    • PROCESS FOR THE PRODUCTION OF 2-(SUBSTITUTED BENZOYL)1,3 CYCLOHEXANEDIONES
    • 2-(取代苯甲酰基)1,3环己基磺酸的制备方法
    • WO1996022958A1
    • 1996-08-01
    • PCT/GB1996000082
    • 1996-01-16
    • ZENECA LIMITEDBROWN, Stephen, MartinRAWLINSON, Howard
    • ZENECA LIMITED
    • C07C45/54
    • C07C45/54C07C315/04C07C317/24C07C49/792
    • A process for preparing a compound of formula (I), where R , R , R , R , R and R are independently hydrogen or C1-6 alkyl; R is halogen, cyano, NO2, C1-4 alkyl, C1-4 haloalkyl, C1-4 alkoxy or RaS in which Ra is C1-4 alkyl; R , R and R independently are hydrogen, halogen, C1-4 alkyl, C1-4 alkoxy, C1-4 haloalkyl, C1-4 haloalkoxy, CN, NO2, phenoxy or substituted phenoxy; RbS(O)n Om in which m is 0 or 1, n is 0, 1 or 2 and Rb is C1-4 alkyl, C1-4 haloalkyl, phenyl or benzyl, NHCORc in which Rc is C1-4 alkyl, NRdRe in which Rd and Re indenpendently are hydrogen or C1-4 alkyl; RfC(O)- in which Rf is hydrogen, C1-4 alkyl, C1-4 haloalkyl or C1-4 alkoxy; SO2NRgRh in which Rg and Rh independently are hydrogen or C1-4 alkyl; or any two of R , R and R together with the carbon atoms to which they are attached form a 5 or 6 membered heterocyclic ring containing up to three heteroatoms selected from O, N or S and which may be optionally substituted by =NOC1-4 alkyl, C1-4 alkyl, C1-4 haloalkyl, C1-4 alkoxy or halogen; which process comprises the rearrangement of a compound of formula (II) where R , R , R , R , R , R , R , R , R and R are as defined in relation to formula (I), in a non-polar solvent in the presence of a cyanide source, an alkali or alkaline earth metal carbonate, a phase transfer catalyst and 1-6 moles of water with respect to the compound of formula (II).
    • 制备式(I)化合物的方法,其中R 1,R 2,R 3,R 4,R 5和R 6独立地是氢或C 1-6烷基 ; R 7是卤素,氰基,NO 2,C 1-4烷基,C 1-4卤代烷基,C 1-4烷氧基或R a,其中R a是C 1-4烷基; R 8,R 9和R 10独立地是氢,卤素,C 1-4烷基,C 1-4烷氧基,C 1-4卤代烷基,C 1-4卤代烷氧基,CN,NO 2,苯氧基或取代的苯氧基; RbS(O)n Om,其中m为0或1,n为0,1或2,Rb为C1-4烷基,C1-4卤代烷基,苯基或苄基,NHCORc,其中Rc为C1-4烷基,NRdRe为 哪个Rd和Re独立地是氢或C 1-4烷基; RfC(O) - ,其中R f为氢,C 1-4烷基,C 1-4卤代烷基或C 1-4烷氧基; 其中Rg和Rh独立地为氢或C1-4烷基的SO2NRgRh; 或R 8,R 9和R 10中的任何两个与它们所连接的碳原子一起形成含有至多三个选自O,N或S的杂原子的5或6元杂环,其中 可以任选被= NOC 1-4烷基,C 1-4烷基,C 1-4卤代烷基,C 1-4烷氧基或卤素取代; 该方法包括式(II)化合物的重排,其中R 1,R 2,R 3,R 4,R 5,R 6,R 7,R 7, 在非极性溶剂中,在氰化物源,碱金属或碱土金属碳酸盐,相转移催化剂存在下,R 9和R 10如关于式(I)所定义) 和1-6摩尔水相对于式(II)化合物。
    • 100. 发明申请
    • PREPARATION OF CYCLOPROPANE ESTERS
    • 环孢菌素的制备
    • WO1996016018A1
    • 1996-05-30
    • PCT/GB1995002570
    • 1995-11-02
    • ZENECA LIMITEDBOWDEN, Martin, CharlesBROWN, Stephen, Martin
    • ZENECA LIMITED
    • C07C69/743
    • C07C69/743
    • The invention provides an improved process for the preparation of a lower alkyl ester of 3-(2-chloro-3,3,3-trifluoroprop-1-en-1-yl)-2,2-dimethylcyclopropane carboxylic acid in which the corresponding lower alkyl ester of a carboxylic acid selected from 6-bromo-6-chloro-3,3-dimethyl-7,7,7-trifluorohept-2-enoic acid and 6,6-dichloro-3,3-dimethyl-7,7,7-trifluorohept-2-enoic acid is treated with an alkali metal lower alkoxylate in the presence of an aromatic hydrocarbon solvent under conditions under which the lower alcohol of the alkoxylate is removed from the reaction mixture by distillation with the aromatic solvent. The products are useful as intermediates in the manufacture of pyrethroid insecticides.
    • 本发明提供了制备3-(2-氯-3,3,3-三氟丙-1-烯-1-基)-2,2-二甲基环丙烷羧酸的低级烷基酯的改进方法,其中相应的 选自6-溴-6-氯-3,3-二甲基-7,7,7-三氟庚-2-烯酸和6,6-二氯-3,3-二甲基-7,7-二羧酸的羧酸的低级烷基酯, 7,7-三氟庚-2-烯酸在芳族烃溶剂存在下用碱金属低级烷氧基化物处理,在烷基化物的低级醇通过芳族溶剂蒸馏除去反应混合物的条件下进行处理。 该产品可用作制造拟除虫菊酯杀虫剂的中间体。