3-CYANOPYRIDINIUM TRICYANOMETHANIDES
    2.
    发明申请
    3-CYANOPYRIDINIUM TRICYANOMETHANIDES 审中-公开
    3-氰基亚氨基三亚甲基四氢呋喃

    公开(公告)号:WO2012076367A1

    公开(公告)日:2012-06-14

    申请号:PCT/EP2011/071294

    申请日:2011-11-29

    IPC分类号: C07D213/78 B01D53/14

    CPC分类号: C07D213/78

    摘要: Disclosed are 3-cyanopyridinium tricyanomethanides of formula (I), wherein n is an integer from 2 to 10 and R is hydrogen or -CN, and a process for the preparation thereof. The 3-cyanopyridinium tricyanomethanides are useful e. g. as selective solvents in the separation of alkene-alkane mixtures.

    摘要翻译: 公开了式(I)的3-氰基吡啶鎓三氰基甲烷化合物及其制备方法,其中n为2-10的整数,R为氢或-CN。 3-氰基吡啶鎓三氰基甲烷是有用的。 G。 作为烯烃 - 烷烃混合物分离中的选择性溶剂。

    PROCESS FOR THE PREPARATION OF ENOLATE SALTS OF 4-FLUORO-2-HYDROXYMETHYLENE-3-OXO-BUTYRATES
    3.
    发明申请
    PROCESS FOR THE PREPARATION OF ENOLATE SALTS OF 4-FLUORO-2-HYDROXYMETHYLENE-3-OXO-BUTYRATES 审中-公开
    4-氟-2-羟基乙烯基-3-氧代丁酸酯的增溶盐的制备方法

    公开(公告)号:WO2012007142A1

    公开(公告)日:2012-01-19

    申请号:PCT/EP2011003445

    申请日:2011-07-11

    IPC分类号: C07C67/343 C07C69/716

    摘要: Enolate salts of 4-fluoro-2-hydroxymethylene-3-oxobutyrates of formula wherein R1 is C1-10 alkyl, R2 and R3 are independently hydrogen or fluorine, M is an alkali or alkaline earth metal, and n is 1 or 2, are prepared from enolate salts of the corresponding 4-fluoro-3-oxobutyrates and carbon monoxide. The enolate salts of formula I can be alkylated or acylated to obtain the corresponding enol ethers and esters. The 4-fluoro-3-oxobutyrate starting material can be prepared from 1,1-difluoroethyl methyl ethers by SbF5-catalyzed fluoromethane elimination followed by halogen exchange with lithium chloride, reacting the thus obtained fluoroacetyl chloride with ketene and quenching with the appropriate alcohol R1-OH.

    摘要翻译: 4-氟-2-羟基亚甲基-3-氧代丁酸烯醇盐,其中R1是C1-10烷基,R2和R3独立地是氢或氟,M是碱金属或碱土金属,n是1或2是 由相应的4-氟-3-氧代丁酸乙酯和一氧化碳的烯醇盐制备。 式I的烯醇化盐可被烷基化或酰化,得到相应的烯醇醚和酯。 4-氟-3-氧代丁酸酯原料可以由1,1-二氟乙基甲基醚通过SbF 5催化的氟甲烷消除制备,随后与氯化锂进行卤素交换,使得到的氟乙酰氯与乙烯酮反应,并用适当的醇R 1 -哦。